2115402975 has 36 divisors (see below), whose sum is σ = 4330199536. Its totient is φ = 967040640.

The previous prime is 2115402959. The next prime is 2115403009. The reversal of 2115402975 is 5792045112.

2115402975 is a `hidden beast` number, since 21 + 1 + 540 + 2 + 97 + 5 = 666.

It is not a de Polignac number, because 2115402975 - 2⁴ = 2115402959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 669982 + ... + 673131.

Almost surely, 2^2115402975 is an apocalyptic number.

2115402975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2115402975 is an abundant number, since it is smaller than the sum of its proper divisors (2214796561).

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

2115402975 is a wasteful number, since it uses less digits than its factorization.

2115402975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343136 (or 1343128 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 2115402975 is about 45993.5101400187. The cubic root of 2115402975 is about 1283.7024505591.

The spelling of 2115402975 in words is "two billion, one hundred fifteen million, four hundred two thousand, nine hundred seventy-five".