64351443061423 has 32 divisors (see below), whose sum is σ = 74194394961920. Its totient is φ = 54672846359040.

The previous prime is 64351443061417. The next prime is 64351443061453. The reversal of 64351443061423 is 32416034415346.

It is not a de Polignac number, because 64351443061423 - 2²⁹ = 64350906190511 is a prime.

It is a super-2 number, since 2×64351443061423² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64351443061453) 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, 766201690 + ... + 766285672.

It is an arithmetic number, because the mean of its divisors is an integer number (2318574842560).

Almost surely, 2^{64351443061423} is an apocalyptic number.

64351443061423 is a deficient number, since it is larger than the sum of its proper divisors (9842951900497).

64351443061423 is a wasteful number, since it uses less digits than its factorization.

64351443061423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85847.

The product of its (nonzero) digits is 2488320, while the sum is 46.

Adding to 64351443061423 its reverse (32416034415346), we get a palindrome (96767477476769).

The spelling of 64351443061423 in words is "sixty-four trillion, three hundred fifty-one billion, four hundred forty-three million, sixty-one thousand, four hundred twenty-three".