69697957391982 has 48 divisors (see below), whose sum is σ = 151548683170560. Its totient is φ = 23150125971216.

The previous prime is 69697957391971. The next prime is 69697957391989. The reversal of 69697957391982 is 28919375979696.

69697957391982 is a `hidden beast` number, since 6 + 9 + 6 + 97 + 9 + 57 + 391 + 9 + 82 = 666.

It is a super-2 number, since 2×69697957391982² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 69697957391892 and 69697957391901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69697957391989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 389025819 + ... + 389204937.

It is an arithmetic number, because the mean of its divisors is an integer number (3157264232720).

Almost surely, 2^{69697957391982} is an apocalyptic number.

69697957391982 is an abundant number, since it is smaller than the sum of its proper divisors (81850725778578).

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

69697957391982 is a wasteful number, since it uses less digits than its factorization.

69697957391982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255797 (or 255794 counting only the distinct ones).

The product of its digits is 24998984640, while the sum is 90.

The spelling of 69697957391982 in words is "sixty-nine trillion, six hundred ninety-seven billion, nine hundred fifty-seven million, three hundred ninety-one thousand, nine hundred eighty-two".