68162744247 has 64 divisors (see below), whose sum is σ = 106975411200. Its totient is φ = 38216116224.

The previous prime is 68162744233. The next prime is 68162744249. The reversal of 68162744247 is 74244726186.

It is a happy number.

It is not a de Polignac number, because 68162744247 - 2³⁵ = 33803005879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 68162744247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68162744249) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4874688 + ... + 4888650.

It is an arithmetic number, because the mean of its divisors is an integer number (1671490800).

Almost surely, 2^68162744247 is an apocalyptic number.

68162744247 is a deficient number, since it is larger than the sum of its proper divisors (38812666953).

68162744247 is a wasteful number, since it uses less digits than its factorization.

68162744247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14232.

The product of its digits is 3612672, while the sum is 51.

The spelling of 68162744247 in words is "sixty-eight billion, one hundred sixty-two million, seven hundred forty-four thousand, two hundred forty-seven".