87156240945 has 16 divisors (see below), whose sum is σ = 139458250752. Its totient is φ = 46480573440.

The previous prime is 87156240937. The next prime is 87156240953. The reversal of 87156240945 is 54904265178.

It is an interprime number because it is at equal distance from previous prime (87156240937) and next prime (87156240953).

It is not a de Polignac number, because 87156240945 - 2³ = 87156240937 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103569 + ... + 430161.

It is an arithmetic number, because the mean of its divisors is an integer number (8716140672).

Almost surely, 2^87156240945 is an apocalyptic number.

It is an amenable number.

87156240945 is a deficient number, since it is larger than the sum of its proper divisors (52302009807).

87156240945 is a wasteful number, since it uses less digits than its factorization.

87156240945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344392.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 87156240945 in words is "eighty-seven billion, one hundred fifty-six million, two hundred forty thousand, nine hundred forty-five".