172626633816 has 128 divisors (see below), whose sum is σ = 532083310080. Its totient is φ = 45448667136.

The previous prime is 172626633787. The next prime is 172626633827. The reversal of 172626633816 is 618336626271.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1191675 + ... + 1328661.

It is an arithmetic number, because the mean of its divisors is an integer number (4156900860).

Almost surely, 2^172626633816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172626633816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266041655040).

172626633816 is an abundant number, since it is smaller than the sum of its proper divisors (359456676264).

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

172626633816 is a wasteful number, since it uses less digits than its factorization.

172626633816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137593 (or 137589 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 51.

The spelling of 172626633816 in words is "one hundred seventy-two billion, six hundred twenty-six million, six hundred thirty-three thousand, eight hundred sixteen".