172245677860 has 48 divisors (see below), whose sum is σ = 364929417216. Its totient is φ = 68287266432.

The previous prime is 172245677831. The next prime is 172245677861. The reversal of 172245677860 is 68776542271.

It is not an unprimeable number, because it can be changed into a prime (172245677861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2539549 + ... + 2606491.

It is an arithmetic number, because the mean of its divisors is an integer number (7602696192).

Almost surely, 2^172245677860 is an apocalyptic number.

172245677860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172245677860 is an abundant number, since it is smaller than the sum of its proper divisors (192683739356).

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

172245677860 is a wasteful number, since it uses less digits than its factorization.

172245677860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68092 (or 68090 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 55.

The spelling of 172245677860 in words is "one hundred seventy-two billion, two hundred forty-five million, six hundred seventy-seven thousand, eight hundred sixty".