90508121832 has 32 divisors (see below), whose sum is σ = 227520427680. Its totient is φ = 30002690880.

The previous prime is 90508121831. The next prime is 90508121863. The reversal of 90508121832 is 23812180509.

It is not an unprimeable number, because it can be changed into a prime (90508121831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10413258 + ... + 10421945.

It is an arithmetic number, because the mean of its divisors is an integer number (7110013365).

Almost surely, 2^90508121832 is an apocalyptic number.

It is an amenable number.

90508121832 is an abundant number, since it is smaller than the sum of its proper divisors (137012305848).

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

90508121832 is a wasteful number, since it uses less digits than its factorization.

90508121832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20835393 (or 20835389 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 90508121832 in words is "ninety billion, five hundred eight million, one hundred twenty-one thousand, eight hundred thirty-two".