172231812768 has 96 divisors (see below), whose sum is σ = 494145308160. Its totient is φ = 52290478080.

The previous prime is 172231812749. The next prime is 172231812787. The reversal of 172231812768 is 867218132271.

It is an interprime number because it is at equal distance from previous prime (172231812749) and next prime (172231812787).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1651573 + ... + 1752756.

It is an arithmetic number, because the mean of its divisors is an integer number (5147346960).

Almost surely, 2^172231812768 is an apocalyptic number.

It is an amenable number.

172231812768 is an abundant number, since it is smaller than the sum of its proper divisors (321913495392).

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

172231812768 is a wasteful number, since it uses less digits than its factorization.

172231812768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404390 (or 3404382 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The spelling of 172231812768 in words is "one hundred seventy-two billion, two hundred thirty-one million, eight hundred twelve thousand, seven hundred sixty-eight".