68047520443 has 6 divisors (see below), whose sum is σ = 79157319756. Its totient is φ = 58326446052.

The previous prime is 68047520363. The next prime is 68047520483. The reversal of 68047520443 is 34402574086.

It is a de Polignac number, because none of the positive numbers 2^k-68047520443 is a prime.

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 68047520443.

It is not an unprimeable number, because it can be changed into a prime (68047520483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694362405 + ... + 694362502.

It is an arithmetic number, because the mean of its divisors is an integer number (13192886626).

Almost surely, 2^68047520443 is an apocalyptic number.

68047520443 is a deficient number, since it is larger than the sum of its proper divisors (11109799313).

68047520443 is a wasteful number, since it uses less digits than its factorization.

68047520443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388724921 (or 1388724914 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 68047520443 in words is "sixty-eight billion, forty-seven million, five hundred twenty thousand, four hundred forty-three".