64435644653446 has 64 divisors (see below), whose sum is σ = 111902578920000. Its totient is φ = 27501848657920.

The previous prime is 64435644653441. The next prime is 64435644653449.

64435644653446 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64435644653441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3269341440 + ... + 3269361148.

It is an arithmetic number, because the mean of its divisors is an integer number (1748477795625).

Almost surely, 2^{64435644653446} is an apocalyptic number.

64435644653446 is a deficient number, since it is larger than the sum of its proper divisors (47466934266554).

64435644653446 is a wasteful number, since it uses less digits than its factorization.

64435644653446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39657.

The product of its digits is 1194393600, while the sum is 64.

The spelling of 64435644653446 in words is "sixty-four trillion, four hundred thirty-five billion, six hundred forty-four million, six hundred fifty-three thousand, four hundred forty-six".