172707327777856 has 189 divisors, whose sum is σ = 369533109288031. Its totient is φ = 80070456524800.

The previous prime is 172707327777833. The next prime is 172707327777863. The reversal of 172707327777856 is 658777723707271.

The square root of 172707327777856 is 13141816.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 730751425600 + 171976576352256 = 854840^2 + 13113984^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 126897374616 + ... + 126897375976.

Almost surely, 2^{172707327777856} is an apocalyptic number.

172707327777856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

172707327777856 is the 13141816-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172707327777856

172707327777856 is an abundant number, since it is smaller than the sum of its proper divisors (196825781510175).

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

172707327777856 is an frugal number, since it uses more digits than its factorization.

172707327777856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910 (or 1451 counting only the distinct ones).

The product of its (nonzero) digits is 2371803840, while the sum is 76.

The spelling of 172707327777856 in words is "one hundred seventy-two trillion, seven hundred seven billion, three hundred twenty-seven million, seven hundred seventy-seven thousand, eight hundred fifty-six".