69506576881 has 9 divisors (see below), whose sum is σ = 80856736281. Its totient is φ = 59575484052.

The previous prime is 69506576813. The next prime is 69506576899. The reversal of 69506576881 is 18867560596.

The square root of 69506576881 is 263641.

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

It is not a de Polignac number, because 69506576881 - 2⁷ = 69506576753 is a prime.

It is a super-2 number, since 2×69506576881² (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 (69506576281) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1826656 + ... + 1864318.

It is an arithmetic number, because the mean of its divisors is an integer number (8984081809).

Almost surely, 2^69506576881 is an apocalyptic number.

69506576881 is the 263641-st square number.

69506576881 is the 131821-st centered octagonal number.

It is an amenable number.

69506576881 is a deficient number, since it is larger than the sum of its proper divisors (11350159400).

69506576881 is an frugal number, since it uses more digits than its factorization.

69506576881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75340 (or 37670 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 69506576881 in words is "sixty-nine billion, five hundred six million, five hundred seventy-six thousand, eight hundred eighty-one".