68156500624 has 15 divisors (see below), whose sum is σ = 132055243267. Its totient is φ = 34077728176.

The previous prime is 68156500619. The next prime is 68156500627. The reversal of 68156500624 is 42600565186.

The square root of 68156500624 is 261068.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68156500627) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1011639 + ... + 1076905.

Almost surely, 2^68156500624 is an apocalyptic number.

68156500624 is the 261068-th square number.

It is an amenable number.

68156500624 is a deficient number, since it is larger than the sum of its proper divisors (63898742643).

68156500624 is an frugal number, since it uses more digits than its factorization.

68156500624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130542 (or 65269 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 68156500624 in words is "sixty-eight billion, one hundred fifty-six million, five hundred thousand, six hundred twenty-four".