32499332981 has 2 divisors, whose sum is σ = 32499332982. Its totient is φ = 32499332980.

The previous prime is 32499332953. The next prime is 32499333059. The reversal of 32499332981 is 18923399423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32259392881 + 239940100 = 179609^2 + 15490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32499332981 is a prime.

It is a super-2 number, since 2×32499332981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32499334981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16249666490 + 16249666491.

It is an arithmetic number, because the mean of its divisors is an integer number (16249666491).

Almost surely, 2^32499332981 is an apocalyptic number.

It is an amenable number.

32499332981 is a deficient number, since it is larger than the sum of its proper divisors (1).

32499332981 is an equidigital number, since it uses as much as digits as its factorization.

32499332981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 53.

The spelling of 32499332981 in words is "thirty-two billion, four hundred ninety-nine million, three hundred thirty-two thousand, nine hundred eighty-one".