2115388502154 has 24 divisors (see below), whose sum is σ = 4753095154080. Its totient is φ = 705129500556.

The previous prime is 2115388502147. The next prime is 2115388502179. The reversal of 2115388502154 is 4512058835112.

It is a happy number.

2115388502154 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 388 + 50 + 215 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2176325134 + ... + 2176326105.

It is an arithmetic number, because the mean of its divisors is an integer number (198045631420).

Almost surely, 2^{2115388502154} is an apocalyptic number.

2115388502154 is an abundant number, since it is smaller than the sum of its proper divisors (2637706651926).

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

2115388502154 is an equidigital number, since it uses as much as digits as its factorization.

2115388502154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4352651256 (or 4352651244 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 2115388502154 in words is "two trillion, one hundred fifteen billion, three hundred eighty-eight million, five hundred two thousand, one hundred fifty-four".