69480215281 has 3 divisors (see below), whose sum is σ = 69480478873. Its totient is φ = 69479951690.

The previous prime is 69480215269. The next prime is 69480215369. The reversal of 69480215281 is 18251208496.

The square root of 69480215281 is 263591.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 69480215281 - 2⁵ = 69480215249 is a prime.

It is a super-2 number, since 2×69480215281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69480215201) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 131796 + ... + 395386.

Almost surely, 2^69480215281 is an apocalyptic number.

69480215281 is the 263591-st square number.

69480215281 is the 131796-th centered octagonal number.

It is an amenable number.

69480215281 is a deficient number, since it is larger than the sum of its proper divisors (263592).

69480215281 is an frugal number, since it uses more digits than its factorization.

69480215281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527182 (or 263591 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 69480215281 in words is "sixty-nine billion, four hundred eighty million, two hundred fifteen thousand, two hundred eighty-one".