90789354996 has 12 divisors (see below), whose sum is σ = 211841828352. Its totient is φ = 30263118328.

The previous prime is 90789354989. The next prime is 90789355009. The reversal of 90789354996 is 69945398709.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 90789354996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3782889780 + ... + 3782889803.

It is an arithmetic number, because the mean of its divisors is an integer number (17653485696).

Almost surely, 2^90789354996 is an apocalyptic number.

It is an amenable number.

90789354996 is an abundant number, since it is smaller than the sum of its proper divisors (121052473356).

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

90789354996 is a wasteful number, since it uses less digits than its factorization.

90789354996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7565779590 (or 7565779588 counting only the distinct ones).

The product of its (nonzero) digits is 132269760, while the sum is 69.

The spelling of 90789354996 in words is "ninety billion, seven hundred eighty-nine million, three hundred fifty-four thousand, nine hundred ninety-six".