64647722774627 has 2 divisors, whose sum is σ = 64647722774628. Its totient is φ = 64647722774626.

The previous prime is 64647722774603. The next prime is 64647722774647. The reversal of 64647722774627 is 72647722774646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64647722774627 - 2¹² = 64647722770531 is a prime.

It is not a weakly prime, because it can be changed into another prime (64647722774647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32323861387313 + 32323861387314.

It is an arithmetic number, because the mean of its divisors is an integer number (32323861387314).

Almost surely, 2^{64647722774627} is an apocalyptic number.

64647722774627 is a deficient number, since it is larger than the sum of its proper divisors (1).

64647722774627 is an equidigital number, since it uses as much as digits as its factorization.

64647722774627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1858719744, while the sum is 71.

The spelling of 64647722774627 in words is "sixty-four trillion, six hundred forty-seven billion, seven hundred twenty-two million, seven hundred seventy-four thousand, six hundred twenty-seven".