87511138355000 has 40 divisors (see below), whose sum is σ = 205038597177480. Its totient is φ = 35004455340000.

The previous prime is 87511138354961. The next prime is 87511138355023. The reversal of 87511138355000 is 55383111578.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8751108836 + ... + 8751118835.

It is an arithmetic number, because the mean of its divisors is an integer number (5125964929437).

Almost surely, 2^{87511138355000} is an apocalyptic number.

It is an amenable number.

87511138355000 is an abundant number, since it is smaller than the sum of its proper divisors (117527458822480).

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

87511138355000 is a wasteful number, since it uses less digits than its factorization.

87511138355000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17502227697 (or 17502227678 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 47.

The spelling of 87511138355000 in words is "eighty-seven trillion, five hundred eleven billion, one hundred thirty-eight million, three hundred fifty-five thousand".