69932091976681 has 9 divisors (see below), whose sum is σ = 76867607167869. Its totient is φ = 63574545444300.

The previous prime is 69932091976673. The next prime is 69932091976693. The reversal of 69932091976681 is 18667919023996.

The square root of 69932091976681 is 8362541.

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

It is not a de Polignac number, because 69932091976681 - 2³ = 69932091976673 is a prime.

It is a super-2 number, since 2×69932091976681² (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 = 69932091976598 and 69932091976607.

It is not an unprimeable number, because it can be changed into a prime (69932091976081) 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, 91607836 + ... + 92368066.

Almost surely, 2^{69932091976681} is an apocalyptic number.

69932091976681 is the 8362541-st square number.

69932091976681 is the 4181271-st centered octagonal number.

It is an amenable number.

69932091976681 is a deficient number, since it is larger than the sum of its proper divisors (6935515191188).

69932091976681 is an frugal number, since it uses more digits than its factorization.

69932091976681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520484 (or 760242 counting only the distinct ones).

The product of its (nonzero) digits is 476171136, while the sum is 76.

The spelling of 69932091976681 in words is "sixty-nine trillion, nine hundred thirty-two billion, ninety-one million, nine hundred seventy-six thousand, six hundred eighty-one".