32160423981 has 32 divisors (see below), whose sum is σ = 49336667136. Its totient is φ = 18253872000.

The previous prime is 32160423979. The next prime is 32160423989. The reversal of 32160423981 is 18932406123.

It is not a de Polignac number, because 32160423981 - 2¹ = 32160423979 is a prime.

It is a super-2 number, since 2×32160423981² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32160423989) 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, 2301586 + ... + 2315516.

It is an arithmetic number, because the mean of its divisors is an integer number (1541770848).

Almost surely, 2^32160423981 is an apocalyptic number.

It is an amenable number.

32160423981 is a deficient number, since it is larger than the sum of its proper divisors (17176243155).

32160423981 is a wasteful number, since it uses less digits than its factorization.

32160423981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14673.

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 32160423981 in words is "thirty-two billion, one hundred sixty million, four hundred twenty-three thousand, nine hundred eighty-one".