69109427251264 has 63 divisors (see below), whose sum is σ = 141709791034893. Its totient is φ = 33439047859200.

The previous prime is 69109427251261. The next prime is 69109427251343. The reversal of 69109427251264 is 46215272490196.

The square root of 69109427251264 is 8313208.

It is a perfect power (a square), and thus also a powerful number.

69109427251264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 19222893209664 + 49886534041600 = 4384392^2 + 7063040^2 .

It is a super-2 number, since 2×69109427251264² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69109427251199 and 69109427251208.

It is not an unprimeable number, because it can be changed into a prime (69109427251261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2061658824 + ... + 2061692344.

Almost surely, 2^{69109427251264} is an apocalyptic number.

69109427251264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

69109427251264 is the 8313208-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69109427251264

69109427251264 is an abundant number, since it is smaller than the sum of its proper divisors (72600363783629).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69109427251264 is an frugal number, since it uses more digits than its factorization.

69109427251264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67116 (or 33554 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 69109427251264 in words is "sixty-nine trillion, one hundred nine billion, four hundred twenty-seven million, two hundred fifty-one thousand, two hundred sixty-four".