32564773687 has 2 divisors, whose sum is σ = 32564773688. Its totient is φ = 32564773686.

The previous prime is 32564773669. The next prime is 32564773697. The reversal of 32564773687 is 78637746523.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32564773687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32564773667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16282386843 + 16282386844.

It is an arithmetic number, because the mean of its divisors is an integer number (16282386844).

Almost surely, 2^32564773687 is an apocalyptic number.

32564773687 is a deficient number, since it is larger than the sum of its proper divisors (1).

32564773687 is an equidigital number, since it uses as much as digits as its factorization.

32564773687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 58.

The spelling of 32564773687 in words is "thirty-two billion, five hundred sixty-four million, seven hundred seventy-three thousand, six hundred eighty-seven".