64434111211563 has 64 divisors (see below), whose sum is σ = 90814445568000. Its totient is φ = 40576737849984.

The previous prime is 64434111211559. The next prime is 64434111211573. The reversal of 64434111211563 is 36511211143446.

It is not a de Polignac number, because 64434111211563 - 2² = 64434111211559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64434111211573) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1038441606 + ... + 1038503652.

It is an arithmetic number, because the mean of its divisors is an integer number (1418975712000).

Almost surely, 2^{64434111211563} is an apocalyptic number.

64434111211563 is a deficient number, since it is larger than the sum of its proper divisors (26380334356437).

64434111211563 is a wasteful number, since it uses less digits than its factorization.

64434111211563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63104.

The product of its digits is 207360, while the sum is 42.

The spelling of 64434111211563 in words is "sixty-four trillion, four hundred thirty-four billion, one hundred eleven million, two hundred eleven thousand, five hundred sixty-three".