64374340961 has 16 divisors (see below), whose sum is σ = 75676052736. Its totient is φ = 53603591616.

The previous prime is 64374340913. The next prime is 64374340999. The reversal of 64374340961 is 16904347346.

It is a cyclic number.

It is not a de Polignac number, because 64374340961 - 2¹⁰ = 64374339937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64374340361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24506 + ... + 359651.

It is an arithmetic number, because the mean of its divisors is an integer number (4729753296).

Almost surely, 2^64374340961 is an apocalyptic number.

It is an amenable number.

64374340961 is a deficient number, since it is larger than the sum of its proper divisors (11301711775).

64374340961 is a wasteful number, since it uses less digits than its factorization.

64374340961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384848.

The product of its (nonzero) digits is 1306368, while the sum is 47.

The spelling of 64374340961 in words is "sixty-four billion, three hundred seventy-four million, three hundred forty thousand, nine hundred sixty-one".