87538516436 has 24 divisors (see below), whose sum is σ = 179148594240. Its totient is φ = 36644029632.

The previous prime is 87538516409. The next prime is 87538516453. The reversal of 87538516436 is 63461583578.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 36352001 + ... + 36354408.

It is an arithmetic number, because the mean of its divisors is an integer number (7464524760).

Almost surely, 2^87538516436 is an apocalyptic number.

87538516436 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

87538516436 is an abundant number, since it is smaller than the sum of its proper divisors (91610077804).

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

87538516436 is a wasteful number, since it uses less digits than its factorization.

87538516436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72706463 (or 72706461 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 56.

The spelling of 87538516436 in words is "eighty-seven billion, five hundred thirty-eight million, five hundred sixteen thousand, four hundred thirty-six".