64725574663 has 2 divisors, whose sum is σ = 64725574664. Its totient is φ = 64725574662.

The previous prime is 64725574657. The next prime is 64725574681. The reversal of 64725574663 is 36647552746.

It is a happy number.

64725574663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64725574663 - 2¹⁷ = 64725443591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64725572663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32362787331 + 32362787332.

It is an arithmetic number, because the mean of its divisors is an integer number (32362787332).

Almost surely, 2^64725574663 is an apocalyptic number.

64725574663 is a deficient number, since it is larger than the sum of its proper divisors (1).

64725574663 is an equidigital number, since it uses as much as digits as its factorization.

64725574663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25401600, while the sum is 55.

The spelling of 64725574663 in words is "sixty-four billion, seven hundred twenty-five million, five hundred seventy-four thousand, six hundred sixty-three".