69149013444 has 135 divisors (see below), whose sum is σ = 210383322303. Its totient is φ = 19747394352.

The previous prime is 69149013403. The next prime is 69149013449. The reversal of 69149013444 is 44431094196.

The square root of 69149013444 is 262962.

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

69149013444 is a `hidden beast` number, since 6 + 91 + 490 + 1 + 34 + 44 = 666.

It is a super-2 number, since 2×69149013444² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 69149013444.

It is not an unprimeable number, because it can be changed into a prime (69149013449) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 33132169 + ... + 33134255.

Almost surely, 2^69149013444 is an apocalyptic number.

69149013444 is the 262962-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69149013444

69149013444 is an abundant number, since it is smaller than the sum of its proper divisors (141234308859).

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

69149013444 is an equidigital number, since it uses as much as digits as its factorization.

69149013444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 69149013444 in words is "sixty-nine billion, one hundred forty-nine million, thirteen thousand, four hundred forty-four".