68632356538 has 16 divisors (see below), whose sum is σ = 103233810240. Its totient is φ = 34221164256.

The previous prime is 68632356521. The next prime is 68632356557. The reversal of 68632356538 is 83565323686.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872181 + ... + 1908487.

It is an arithmetic number, because the mean of its divisors is an integer number (6452113140).

Almost surely, 2^68632356538 is an apocalyptic number.

68632356538 is a deficient number, since it is larger than the sum of its proper divisors (34601453702).

68632356538 is a wasteful number, since it uses less digits than its factorization.

68632356538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38901.

The product of its digits is 18662400, while the sum is 55.

The spelling of 68632356538 in words is "sixty-eight billion, six hundred thirty-two million, three hundred fifty-six thousand, five hundred thirty-eight".