64463400357243 has 16 divisors (see below), whose sum is σ = 89537799859200. Its totient is φ = 41207737422240.

The previous prime is 64463400357221. The next prime is 64463400357271. The reversal of 64463400357243 is 34275300436446.

It is not a de Polignac number, because 64463400357243 - 2⁶ = 64463400357179 is a prime.

It is a super-2 number, since 2×64463400357243² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64463400357203) 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, 3179599233 + ... + 3179619506.

It is an arithmetic number, because the mean of its divisors is an integer number (5596112491200).

Almost surely, 2^{64463400357243} is an apocalyptic number.

64463400357243 is a deficient number, since it is larger than the sum of its proper divisors (25074399501957).

64463400357243 is a wasteful number, since it uses less digits than its factorization.

64463400357243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6359218882.

The product of its (nonzero) digits is 17418240, while the sum is 51.

The spelling of 64463400357243 in words is "sixty-four trillion, four hundred sixty-three billion, four hundred million, three hundred fifty-seven thousand, two hundred forty-three".