90251499768 has 32 divisors (see below), whose sum is σ = 225649708800. Its totient is φ = 30081038688.

The previous prime is 90251499697. The next prime is 90251499781. The reversal of 90251499768 is 86799415209.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97755 + ... + 435957.

It is an arithmetic number, because the mean of its divisors is an integer number (7051553400).

Almost surely, 2^90251499768 is an apocalyptic number.

It is an amenable number.

90251499768 is an abundant number, since it is smaller than the sum of its proper divisors (135398209032).

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

90251499768 is a wasteful number, since it uses less digits than its factorization.

90251499768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349331 (or 349327 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 90251499768 in words is "ninety billion, two hundred fifty-one million, four hundred ninety-nine thousand, seven hundred sixty-eight".