32400224081 has 2 divisors, whose sum is σ = 32400224082. Its totient is φ = 32400224080.

The previous prime is 32400224063. The next prime is 32400224159. The reversal of 32400224081 is 18042200423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31005575056 + 1394649025 = 176084^2 + 37345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32400224081 is a prime.

It is a super-2 number, since 2×32400224081² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32400224081.

It is not a weakly prime, because it can be changed into another prime (32400224041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16200112040 + 16200112041.

It is an arithmetic number, because the mean of its divisors is an integer number (16200112041).

Almost surely, 2^32400224081 is an apocalyptic number.

It is an amenable number.

32400224081 is a deficient number, since it is larger than the sum of its proper divisors (1).

32400224081 is an equidigital number, since it uses as much as digits as its factorization.

32400224081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

The spelling of 32400224081 in words is "thirty-two billion, four hundred million, two hundred twenty-four thousand, eighty-one".