8139556722 has 32 divisors (see below), whose sum is σ = 17771581440. Its totient is φ = 2464789520.

The previous prime is 8139556681. The next prime is 8139556727. The reversal of 8139556722 is 2276559318.

It is not an unprimeable number, because it can be changed into a prime (8139556727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52123 + ... + 137825.

It is an arithmetic number, because the mean of its divisors is an integer number (555361920).

Almost surely, 2^8139556722 is an apocalyptic number.

8139556722 is an abundant number, since it is smaller than the sum of its proper divisors (9632024718).

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

8139556722 is a wasteful number, since it uses less digits than its factorization.

8139556722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87158.

The product of its digits is 907200, while the sum is 48.

The square root of 8139556722 is about 90219.4919183211. The cubic root of 8139556722 is about 2011.5627494207.

The spelling of 8139556722 in words is "eight billion, one hundred thirty-nine million, five hundred fifty-six thousand, seven hundred twenty-two".