32974938781 has 2 divisors, whose sum is σ = 32974938782. Its totient is φ = 32974938780.

The previous prime is 32974938751. The next prime is 32974938803. The reversal of 32974938781 is 18783947923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31313072025 + 1661866756 = 176955^2 + 40766^2 .

It is a cyclic number.

It is not a de Polignac number, because 32974938781 - 2¹¹ = 32974936733 is a prime.

It is a super-2 number, since 2×32974938781² (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 (32974938751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16487469390 + 16487469391.

It is an arithmetic number, because the mean of its divisors is an integer number (16487469391).

Almost surely, 2^32974938781 is an apocalyptic number.

It is an amenable number.

32974938781 is a deficient number, since it is larger than the sum of its proper divisors (1).

32974938781 is an equidigital number, since it uses as much as digits as its factorization.

32974938781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 61.

The spelling of 32974938781 in words is "thirty-two billion, nine hundred seventy-four million, nine hundred thirty-eight thousand, seven hundred eighty-one".