172057630321476 has 81 divisors (see below), whose sum is σ = 442182568633533. Its totient is φ = 56410763761440.

The previous prime is 172057630321457. The next prime is 172057630321477. The reversal of 172057630321476 is 674123036750271.

The square root of 172057630321476 is 13117074.

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

172057630321476 is a `hidden beast` number, since 1 + 7 + 2 + 0 + 57 + 6 + 303 + 214 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5594994159876 + 166462636161600 = 2365374^2 + 12902040^2 .

It is not an unprimeable number, because it can be changed into a prime (172057630321477) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4800831165 + ... + 4800867003.

Almost surely, 2^{172057630321476} is an apocalyptic number.

172057630321476 is the 13117074-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172057630321476

172057630321476 is an abundant number, since it is smaller than the sum of its proper divisors (270124938312057).

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

172057630321476 is an frugal number, since it uses more digits than its factorization.

172057630321476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71810 (or 35905 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 54.

The spelling of 172057630321476 in words is "one hundred seventy-two trillion, fifty-seven billion, six hundred thirty million, three hundred twenty-one thousand, four hundred seventy-six".