90426502540 has 48 divisors (see below), whose sum is σ = 214302322080. Its totient is φ = 31748487680.

The previous prime is 90426502531. The next prime is 90426502547. The reversal of 90426502540 is 4520562409.

It is a self number, because there is not a number n which added to its sum of digits gives 90426502540.

It is not an unprimeable number, because it can be changed into a prime (90426502547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7080337 + ... + 7093096.

It is an arithmetic number, because the mean of its divisors is an integer number (4464631710).

Almost surely, 2^90426502540 is an apocalyptic number.

It is an amenable number.

90426502540 is an abundant number, since it is smaller than the sum of its proper divisors (123875819540).

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

90426502540 is a wasteful number, since it uses less digits than its factorization.

90426502540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14173482 (or 14173480 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 90426502540 in words is "ninety billion, four hundred twenty-six million, five hundred two thousand, five hundred forty".