72315770636106 has 72 divisors (see below), whose sum is σ = 170814083937120. Its totient is φ = 22049091503712.

The previous prime is 72315770636089. The next prime is 72315770636141. The reversal of 72315770636106 is 60163607751327.

72315770636106 is a `hidden beast` number, since 7 + 2 + 3 + 1 + 577 + 0 + 6 + 3 + 61 + 0 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 125425590 + ... + 126000833.

It is an arithmetic number, because the mean of its divisors is an integer number (2372417832460).

Almost surely, 2^{72315770636106} is an apocalyptic number.

72315770636106 is an abundant number, since it is smaller than the sum of its proper divisors (98498313301014).

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

72315770636106 is a wasteful number, since it uses less digits than its factorization.

72315770636106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251426508 (or 251426476 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 54.

The spelling of 72315770636106 in words is "seventy-two trillion, three hundred fifteen billion, seven hundred seventy million, six hundred thirty-six thousand, one hundred six".