32561033993 has 2 divisors, whose sum is σ = 32561033994. Its totient is φ = 32561033992.

The previous prime is 32561033983. The next prime is 32561034097. The reversal of 32561033993 is 39933016523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31750606969 + 810427024 = 178187^2 + 28468^2 .

It is a cyclic number.

It is not a de Polignac number, because 32561033993 - 2¹⁰ = 32561032969 is a prime.

It is not a weakly prime, because it can be changed into another prime (32561033983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16280516996 + 16280516997.

It is an arithmetic number, because the mean of its divisors is an integer number (16280516997).

Almost surely, 2^32561033993 is an apocalyptic number.

It is an amenable number.

32561033993 is a deficient number, since it is larger than the sum of its proper divisors (1).

32561033993 is an equidigital number, since it uses as much as digits as its factorization.

32561033993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393660, while the sum is 44.

The spelling of 32561033993 in words is "thirty-two billion, five hundred sixty-one million, thirty-three thousand, nine hundred ninety-three".