68572742136 has 64 divisors (see below), whose sum is σ = 174785519520. Its totient is φ = 22414049280.

The previous prime is 68572742131. The next prime is 68572742159. The reversal of 68572742136 is 63124727586.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68572742131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189976 + ... + 416216.

Almost surely, 2^68572742136 is an apocalyptic number.

It is an amenable number.

68572742136 is an abundant number, since it is smaller than the sum of its proper divisors (106212777384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68572742136 is a wasteful number, since it uses less digits than its factorization.

68572742136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226496 (or 226492 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 51.

The spelling of 68572742136 in words is "sixty-eight billion, five hundred seventy-two million, seven hundred forty-two thousand, one hundred thirty-six".