87658477140 has 192 divisors, whose sum is σ = 279643392000. Its totient is φ = 20338407936.

The previous prime is 87658477139. The next prime is 87658477171. The reversal of 87658477140 is 4177485678.

It is a super-2 number, since 2×87658477140² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

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 63 ways as a sum of consecutive naturals, for example, 2934319 + ... + 2964041.

It is an arithmetic number, because the mean of its divisors is an integer number (1456476000).

Almost surely, 2^87658477140 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 87658477140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139821696000).

87658477140 is an abundant number, since it is smaller than the sum of its proper divisors (191984914860).

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

87658477140 is a wasteful number, since it uses less digits than its factorization.

87658477140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29966 (or 29964 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 57.

The spelling of 87658477140 in words is "eighty-seven billion, six hundred fifty-eight million, four hundred seventy-seven thousand, one hundred forty".