90432936720 has 120 divisors (see below), whose sum is σ = 347090243136. Its totient is φ = 20670384384.

The previous prime is 90432936677. The next prime is 90432936733. The reversal of 90432936720 is 2763923409.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8966482 + ... + 8976561.

Almost surely, 2^90432936720 is an apocalyptic number.

90432936720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90432936720 is an abundant number, since it is smaller than the sum of its proper divisors (256657306416).

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

90432936720 is a wasteful number, since it uses less digits than its factorization.

90432936720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17943069 (or 17943060 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 90432936720 in words is "ninety billion, four hundred thirty-two million, nine hundred thirty-six thousand, seven hundred twenty".