69257922561 has 65 divisors (see below), whose sum is σ = 109658264321. Its totient is φ = 43741845828.

The previous prime is 69257922553. The next prime is 69257922563. The reversal of 69257922561 is 16522975296.

The square root of 69257922561 is 263169.

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

69257922561 is a `hidden beast` number, since 6 + 9 + 2 + 5 + 79 + 2 + 2 + 561 = 666.

69257922561 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 69257922561 - 2³ = 69257922553 is a prime.

It is a Duffinian number.

Its product of digits (4082400) is a multiple of the sum of its prime factors (112).

It is a junction number, because it is equal to n+sod(n) for n = 69257922498 and 69257922507.

It is not an unprimeable number, because it can be changed into a prime (69257922563) by changing a digit.

It is a polite number, since it can be written in 64 ways as a sum of consecutive naturals, for example, 3645153810 + ... + 3645153828.

Almost surely, 2^69257922561 is an apocalyptic number.

69257922561 is the 263169-th square number.

69257922561 is the 131585-th centered octagonal number.

It is an amenable number.

69257922561 is a deficient number, since it is larger than the sum of its proper divisors (40400341760).

69257922561 is an frugal number, since it uses more digits than its factorization.

69257922561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 22 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 69257922561 in words is "sixty-nine billion, two hundred fifty-seven million, nine hundred twenty-two thousand, five hundred sixty-one".