87915445478 has 16 divisors (see below), whose sum is σ = 154388100384. Its totient is φ = 36759071040.

The previous prime is 87915445463. The next prime is 87915445487. The reversal of 87915445478 is 87454451978.

It is a self number, because there is not a number n which added to its sum of digits gives 87915445478.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76580825 + ... + 76581972.

It is an arithmetic number, because the mean of its divisors is an integer number (9649256274).

Almost surely, 2^87915445478 is an apocalyptic number.

87915445478 is a deficient number, since it is larger than the sum of its proper divisors (66472654906).

87915445478 is a wasteful number, since it uses less digits than its factorization.

87915445478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153162847.

The product of its digits is 45158400, while the sum is 62.

The spelling of 87915445478 in words is "eighty-seven billion, nine hundred fifteen million, four hundred forty-five thousand, four hundred seventy-eight".