32806621918 has 64 divisors (see below), whose sum is σ = 59091379200. Its totient is φ = 13355983872.

The previous prime is 32806621847. The next prime is 32806621919. The reversal of 32806621918 is 81912660823.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32806621919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39669021 + ... + 39669847.

It is an arithmetic number, because the mean of its divisors is an integer number (923302800).

Almost surely, 2^32806621918 is an apocalyptic number.

32806621918 is a deficient number, since it is larger than the sum of its proper divisors (26284757282).

32806621918 is a wasteful number, since it uses less digits than its factorization.

32806621918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 32806621918 in words is "thirty-two billion, eight hundred six million, six hundred twenty-one thousand, nine hundred eighteen".