69381557732889 has 12 divisors (see below), whose sum is σ = 100307526135076. Its totient is φ = 46212962350752.

The previous prime is 69381557732857. The next prime is 69381557732939. The reversal of 69381557732889 is 98823775518396.

69381557732889 is a `hidden beast` number, since 6 + 9 + 3 + 8 + 1 + 5 + 577 + 32 + 8 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5723180628489 + 63658377104400 = 2392317^2 + 7978620^2 .

It is not a de Polignac number, because 69381557732889 - 2⁵ = 69381557732857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69381557732989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3450778654 + ... + 3450798759.

Almost surely, 2^{69381557732889} is an apocalyptic number.

It is an amenable number.

69381557732889 is a deficient number, since it is larger than the sum of its proper divisors (30925968402187).

69381557732889 is a wasteful number, since it uses less digits than its factorization.

69381557732889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6901578536 (or 6901578533 counting only the distinct ones).

The product of its digits is 5486745600, while the sum is 81.

The spelling of 69381557732889 in words is "sixty-nine trillion, three hundred eighty-one billion, five hundred fifty-seven million, seven hundred thirty-two thousand, eight hundred eighty-nine".