90908819004 has 24 divisors (see below), whose sum is σ = 221343212160. Its totient is φ = 28985420464.

The previous prime is 90908819003. The next prime is 90908819021. The reversal of 90908819004 is 40091880909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90908819003) 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, 164689614 + ... + 164690165.

It is an arithmetic number, because the mean of its divisors is an integer number (9222633840).

Almost surely, 2^90908819004 is an apocalyptic number.

It is an amenable number.

90908819004 is an abundant number, since it is smaller than the sum of its proper divisors (130434393156).

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

90908819004 is a wasteful number, since it uses less digits than its factorization.

90908819004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329379809 (or 329379807 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 90908819004 in words is "ninety billion, nine hundred eight million, eight hundred nineteen thousand, four".