172267641571457 has 2 divisors, whose sum is σ = 172267641571458. Its totient is φ = 172267641571456.

The previous prime is 172267641571397. The next prime is 172267641571469. The reversal of 172267641571457 is 754175146762271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167767541205121 + 4500100366336 = 12952511^2 + 2121344^2 .

It is a cyclic number.

It is not a de Polignac number, because 172267641571457 - 2⁶ = 172267641571393 is a prime.

It is a super-2 number, since 2×172267641571457² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172267641571393 and 172267641571402.

It is not a weakly prime, because it can be changed into another prime (172267641571057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86133820785728 + 86133820785729.

It is an arithmetic number, because the mean of its divisors is an integer number (86133820785729).

Almost surely, 2^{172267641571457} is an apocalyptic number.

It is an amenable number.

172267641571457 is a deficient number, since it is larger than the sum of its proper divisors (1).

172267641571457 is an equidigital number, since it uses as much as digits as its factorization.

172267641571457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138297600, while the sum is 65.

The spelling of 172267641571457 in words is "one hundred seventy-two trillion, two hundred sixty-seven billion, six hundred forty-one million, five hundred seventy-one thousand, four hundred fifty-seven".