64747112443 has 16 divisors (see below), whose sum is σ = 72695478240. Its totient is φ = 57275172864.

The previous prime is 64747112429. The next prime is 64747112473. The reversal of 64747112443 is 34421174746.

It is a de Polignac number, because none of the positive numbers 2^k-64747112443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64747112443.

It is not an unprimeable number, because it can be changed into a prime (64747112473) 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, 1063078 + ... + 1122331.

It is an arithmetic number, because the mean of its divisors is an integer number (4543467390).

Almost surely, 2^64747112443 is an apocalyptic number.

64747112443 is a deficient number, since it is larger than the sum of its proper divisors (7948365797).

64747112443 is a wasteful number, since it uses less digits than its factorization.

64747112443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185518.

The product of its digits is 451584, while the sum is 43.

The spelling of 64747112443 in words is "sixty-four billion, seven hundred forty-seven million, one hundred twelve thousand, four hundred forty-three".