90874329411887 has 48 divisors (see below), whose sum is σ = 107079331921920. Its totient is φ = 76890624148800.

The previous prime is 90874329411493. The next prime is 90874329412297. The reversal of 90874329411887 is 78811492347809.

It is not a de Polignac number, because 90874329411887 - 2²⁰ = 90874328363311 is a prime.

It is a lonely number, since its distance to closest prime (90874329411493) sets a new record.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90874329411887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90874329416887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2238759962 + ... + 2238800552.

It is an arithmetic number, because the mean of its divisors is an integer number (2230819415040).

Almost surely, 2^{90874329411887} is an apocalyptic number.

90874329411887 is a deficient number, since it is larger than the sum of its proper divisors (16205002510033).

90874329411887 is a wasteful number, since it uses less digits than its factorization.

90874329411887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42532 (or 42525 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 71.

The spelling of 90874329411887 in words is "ninety trillion, eight hundred seventy-four billion, three hundred twenty-nine million, four hundred eleven thousand, eight hundred eighty-seven".