68136811434 has 48 divisors (see below), whose sum is σ = 148055851944. Its totient is φ = 22646793600.

The previous prime is 68136811417. The next prime is 68136811451. The reversal of 68136811434 is 43411863186.

68136811434 is a `hidden beast` number, since 6 + 8 + 136 + 81 + 1 + 434 = 666.

It is an interprime number because it is at equal distance from previous prime (68136811417) and next prime (68136811451).

It can be written as a sum of positive squares in 4 ways, for example, as 59319038025 + 8817773409 = 243555^2 + 93903^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68136811434.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19025524 + ... + 19029104.

Almost surely, 2^68136811434 is an apocalyptic number.

68136811434 is an abundant number, since it is smaller than the sum of its proper divisors (79919040510).

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

68136811434 is a wasteful number, since it uses less digits than its factorization.

68136811434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6343 (or 6340 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The spelling of 68136811434 in words is "sixty-eight billion, one hundred thirty-six million, eight hundred eleven thousand, four hundred thirty-four".