90859604542 has 16 divisors (see below), whose sum is σ = 155997866592. Its totient is φ = 38880194400.

The previous prime is 90859604503. The next prime is 90859604543. The reversal of 90859604542 is 24540695809.

It is a self number, because there is not a number n which added to its sum of digits gives 90859604542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90859604543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4960209 + ... + 4978492.

It is an arithmetic number, because the mean of its divisors is an integer number (9749866662).

Almost surely, 2^90859604542 is an apocalyptic number.

90859604542 is a deficient number, since it is larger than the sum of its proper divisors (65138262050).

90859604542 is a wasteful number, since it uses less digits than its factorization.

90859604542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9939363.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 90859604542 in words is "ninety billion, eight hundred fifty-nine million, six hundred four thousand, five hundred forty-two".