87547193808 has 80 divisors (see below), whose sum is σ = 234052132800. Its totient is φ = 28165294080.

The previous prime is 87547193737. The next prime is 87547193819. The reversal of 87547193808 is 80839174578.

It is a super-2 number, since 2×87547193808² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4125048 + ... + 4146216.

It is an arithmetic number, because the mean of its divisors is an integer number (2925651660).

Almost surely, 2^87547193808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87547193808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117026066400).

87547193808 is an abundant number, since it is smaller than the sum of its proper divisors (146504938992).

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

87547193808 is a wasteful number, since it uses less digits than its factorization.

87547193808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24180 (or 24174 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 87547193808 in words is "eighty-seven billion, five hundred forty-seven million, one hundred ninety-three thousand, eight hundred eight".