68416538424 has 32 divisors (see below), whose sum is σ = 184198373520. Its totient is φ = 21051242496.

The previous prime is 68416538389. The next prime is 68416538429. The reversal of 68416538424 is 42483561486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68416538429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109641577 + ... + 109642200.

Almost surely, 2^68416538424 is an apocalyptic number.

It is an amenable number.

68416538424 is an abundant number, since it is smaller than the sum of its proper divisors (115781835096).

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

68416538424 is a wasteful number, since it uses less digits than its factorization.

68416538424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219283799 (or 219283795 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 51.

The spelling of 68416538424 in words is "sixty-eight billion, four hundred sixteen million, five hundred thirty-eight thousand, four hundred twenty-four".