2115538677 has 24 divisors (see below), whose sum is σ = 3586708736. Its totient is φ = 1176205536.

The previous prime is 2115538637. The next prime is 2115538687. The reversal of 2115538677 is 7768355112.

It is a happy number.

2115538677 is a `hidden beast` number, since 2 + 11 + 553 + 86 + 7 + 7 = 666.

It is not a de Polignac number, because 2115538677 - 2¹⁸ = 2115276533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115538637) 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, 451453 + ... + 456114.

Almost surely, 2^2115538677 is an apocalyptic number.

It is an amenable number.

2115538677 is a deficient number, since it is larger than the sum of its proper divisors (1471170059).

2115538677 is a wasteful number, since it uses less digits than its factorization.

2115538677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907617 (or 907614 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 2115538677 is about 45994.9853462310. The cubic root of 2115538677 is about 1283.7298995869.

The spelling of 2115538677 in words is "two billion, one hundred fifteen million, five hundred thirty-eight thousand, six hundred seventy-seven".