87078761455 has 48 divisors (see below), whose sum is σ = 124625535552. Its totient is φ = 57210624000.

The previous prime is 87078761431. The next prime is 87078761467. The reversal of 87078761455 is 55416787078.

It is not a de Polignac number, because 87078761455 - 2⁷ = 87078761327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87078761455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3384319 + ... + 3409951.

It is an arithmetic number, because the mean of its divisors is an integer number (2596365324).

Almost surely, 2^87078761455 is an apocalyptic number.

87078761455 is a deficient number, since it is larger than the sum of its proper divisors (37546774097).

87078761455 is a wasteful number, since it uses less digits than its factorization.

87078761455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25808 (or 25777 counting only the distinct ones).

The product of its (nonzero) digits is 13171200, while the sum is 58.

The spelling of 87078761455 in words is "eighty-seven billion, seventy-eight million, seven hundred sixty-one thousand, four hundred fifty-five".