32317478820 has 144 divisors (see below), whose sum is σ = 110902454208. Its totient is φ = 7834527360.

The previous prime is 32317478789. The next prime is 32317478833. The reversal of 32317478820 is 2887471323.

It is a super-2 number, since 2×32317478820² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 248799 + ... + 355718.

It is an arithmetic number, because the mean of its divisors is an integer number (770155932).

Almost surely, 2^32317478820 is an apocalyptic number.

32317478820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32317478820 is an abundant number, since it is smaller than the sum of its proper divisors (78584975388).

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

32317478820 is a wasteful number, since it uses less digits than its factorization.

32317478820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604552 (or 604538 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 32317478820 in words is "thirty-two billion, three hundred seventeen million, four hundred seventy-eight thousand, eight hundred twenty".