87054900639 has 64 divisors (see below), whose sum is σ = 137884032000. Its totient is φ = 47826358272.

The previous prime is 87054900637. The next prime is 87054900679. The reversal of 87054900639 is 93600945078.

It is not a de Polignac number, because 87054900639 - 2¹ = 87054900637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87054900591 and 87054900600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87054900637) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18723187 + ... + 18727835.

It is an arithmetic number, because the mean of its divisors is an integer number (2154438000).

Almost surely, 2^87054900639 is an apocalyptic number.

87054900639 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

87054900639 is a deficient number, since it is larger than the sum of its proper divisors (50829131361).

87054900639 is a wasteful number, since it uses less digits than its factorization.

87054900639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 87054900639 in words is "eighty-seven billion, fifty-four million, nine hundred thousand, six hundred thirty-nine".