172622799441 has 9 divisors (see below), whose sum is σ = 249345844059. Its totient is φ = 115081035336.

The previous prime is 172622799439. The next prime is 172622799511. The reversal of 172622799441 is 144997226271.

The square root of 172622799441 is 415479.

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

172622799441 is a `hidden beast` number, since 1 + 7 + 2 + 622 + 7 + 9 + 9 + 4 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 140726268225 + 31896531216 = 375135^2 + 178596^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 172622799441 - 2¹ = 172622799439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172622799641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1177191 + ... + 1315683.

Almost surely, 2^172622799441 is an apocalyptic number.

172622799441 is the 415479-th square number.

172622799441 is the 207740-th centered octagonal number.

It is an amenable number.

172622799441 is a deficient number, since it is larger than the sum of its proper divisors (76723044618).

172622799441 is an frugal number, since it uses more digits than its factorization.

172622799441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276992 (or 138496 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 172622799441 in words is "one hundred seventy-two billion, six hundred twenty-two million, seven hundred ninety-nine thousand, four hundred forty-one".