155677693913 has 16 divisors (see below), whose sum is σ = 179093007744. Its totient is φ = 132558871680.

The previous prime is 155677693909. The next prime is 155677693931. The reversal of 155677693913 is 319396776551.

It is a cyclic number.

It is not a de Polignac number, because 155677693913 - 2² = 155677693909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155677693013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618983 + ... + 833363.

It is an arithmetic number, because the mean of its divisors is an integer number (11193312984).

Almost surely, 2^155677693913 is an apocalyptic number.

It is an amenable number.

155677693913 is a deficient number, since it is larger than the sum of its proper divisors (23415313831).

155677693913 is a wasteful number, since it uses less digits than its factorization.

155677693913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215072.

The product of its digits is 32148900, while the sum is 62.

The spelling of 155677693913 in words is "one hundred fifty-five billion, six hundred seventy-seven million, six hundred ninety-three thousand, nine hundred thirteen".