172568909860 has 12 divisors (see below), whose sum is σ = 362394710748. Its totient is φ = 69027563936.

The previous prime is 172568909707. The next prime is 172568909869. The reversal of 172568909860 is 68909865271.

It can be written as a sum of positive squares in 2 ways, for example, as 57343965156 + 115224944704 = 239466^2 + 339448^2 .

It is not an unprimeable number, because it can be changed into a prime (172568909869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4314222727 + ... + 4314222766.

It is an arithmetic number, because the mean of its divisors is an integer number (30199559229).

Almost surely, 2^172568909860 is an apocalyptic number.

172568909860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172568909860 is an abundant number, since it is smaller than the sum of its proper divisors (189825800888).

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

172568909860 is a wasteful number, since it uses less digits than its factorization.

172568909860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8628445502 (or 8628445500 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 172568909860 in words is "one hundred seventy-two billion, five hundred sixty-eight million, nine hundred nine thousand, eight hundred sixty".