90715456887 has 16 divisors (see below), whose sum is σ = 136499748480. Its totient is φ = 53083234400.

The previous prime is 90715456883. The next prime is 90715456901. The reversal of 90715456887 is 78865451709.

It is a cyclic number.

It is not a de Polignac number, because 90715456887 - 2² = 90715456883 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 90715456887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90715456883) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47394789 + ... + 47396702.

It is an arithmetic number, because the mean of its divisors is an integer number (8531234280).

Almost surely, 2^90715456887 is an apocalyptic number.

90715456887 is a deficient number, since it is larger than the sum of its proper divisors (45784291593).

90715456887 is a wasteful number, since it uses less digits than its factorization.

90715456887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94791534.

The product of its (nonzero) digits is 16934400, while the sum is 60.

The spelling of 90715456887 in words is "ninety billion, seven hundred fifteen million, four hundred fifty-six thousand, eight hundred eighty-seven".