64641373363432 has 8 divisors (see below), whose sum is σ = 121202575056450. Its totient is φ = 32320686681712.

The previous prime is 64641373363387. The next prime is 64641373363481. The reversal of 64641373363432 is 23436337314646.

It can be written as a sum of positive squares in only one way, i.e., 60223280453956 + 4418092909476 = 7760366^2 + 2101926^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4040085835207 + ... + 4040085835222.

Almost surely, 2^{64641373363432} is an apocalyptic number.

It is an amenable number.

64641373363432 is a deficient number, since it is larger than the sum of its proper divisors (56561201693018).

64641373363432 is a wasteful number, since it uses less digits than its factorization.

64641373363432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080171670435 (or 8080171670431 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 55.

The spelling of 64641373363432 in words is "sixty-four trillion, six hundred forty-one billion, three hundred seventy-three million, three hundred sixty-three thousand, four hundred thirty-two".