90942087538 has 16 divisors (see below), whose sum is σ = 142475166720. Its totient is φ = 43454005056.

The previous prime is 90942087497. The next prime is 90942087553. The reversal of 90942087538 is 83578024909.

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, 859383 + ... + 959386.

It is an arithmetic number, because the mean of its divisors is an integer number (8904697920).

Almost surely, 2^90942087538 is an apocalyptic number.

90942087538 is a deficient number, since it is larger than the sum of its proper divisors (51533079182).

90942087538 is a wasteful number, since it uses less digits than its factorization.

90942087538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819881.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 90942087538 in words is "ninety billion, nine hundred forty-two million, eighty-seven thousand, five hundred thirty-eight".