90915894604 has 24 divisors (see below), whose sum is σ = 163450476000. Its totient is φ = 44222113920.

The previous prime is 90915894599. The next prime is 90915894613. The reversal of 90915894604 is 40649851909.

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, 736984 + ... + 851455.

It is an arithmetic number, because the mean of its divisors is an integer number (6810436500).

Almost surely, 2^90915894604 is an apocalyptic number.

It is an amenable number.

90915894604 is a deficient number, since it is larger than the sum of its proper divisors (72534581396).

90915894604 is a wasteful number, since it uses less digits than its factorization.

90915894604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588833 (or 1588831 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 90915894604 in words is "ninety billion, nine hundred fifteen million, eight hundred ninety-four thousand, six hundred four".