64563669401 has 16 divisors (see below), whose sum is σ = 80503507968. Its totient is φ = 50304013200.

The previous prime is 64563669361. The next prime is 64563669421. The reversal of 64563669401 is 10496636546.

It is not a de Polignac number, because 64563669401 - 2¹⁸ = 64563407257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64563669401.

It is not an unprimeable number, because it can be changed into a prime (64563669421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785606 + ... + 863888.

It is an arithmetic number, because the mean of its divisors is an integer number (5031469248).

Almost surely, 2^64563669401 is an apocalyptic number.

It is an amenable number.

64563669401 is a deficient number, since it is larger than the sum of its proper divisors (15939838567).

64563669401 is a wasteful number, since it uses less digits than its factorization.

64563669401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89012.

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 64563669401 in words is "sixty-four billion, five hundred sixty-three million, six hundred sixty-nine thousand, four hundred one".