32181945944 has 8 divisors (see below), whose sum is σ = 60341148660. Its totient is φ = 16090972968.

The previous prime is 32181945919. The next prime is 32181945967. The reversal of 32181945944 is 44954918123.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×32181945944² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32181945892 and 32181945901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011371614 + ... + 2011371629.

Almost surely, 2^32181945944 is an apocalyptic number.

It is an amenable number.

32181945944 is a deficient number, since it is larger than the sum of its proper divisors (28159202716).

32181945944 is a wasteful number, since it uses less digits than its factorization.

32181945944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022743249 (or 4022743245 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

It can be divided in two parts, 321819 and 45944, that added together give a palindrome (367763).

The spelling of 32181945944 in words is "thirty-two billion, one hundred eighty-one million, nine hundred forty-five thousand, nine hundred forty-four".