63172157417 has 2 divisors, whose sum is σ = 63172157418. Its totient is φ = 63172157416.

The previous prime is 63172157383. The next prime is 63172157423. The reversal of 63172157417 is 71475127136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48204837136 + 14967320281 = 219556^2 + 122341^2 .

It is a cyclic number.

It is not a de Polignac number, because 63172157417 - 2¹⁴ = 63172141033 is a prime.

It is a super-2 number, since 2×63172157417² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63172157017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31586078708 + 31586078709.

It is an arithmetic number, because the mean of its divisors is an integer number (31586078709).

Almost surely, 2^63172157417 is an apocalyptic number.

It is an amenable number.

63172157417 is a deficient number, since it is larger than the sum of its proper divisors (1).

63172157417 is an equidigital number, since it uses as much as digits as its factorization.

63172157417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 44.

The spelling of 63172157417 in words is "sixty-three billion, one hundred seventy-two million, one hundred fifty-seven thousand, four hundred seventeen".