163220251202431 has 2 divisors, whose sum is σ = 163220251202432. Its totient is φ = 163220251202430.

The previous prime is 163220251202401. The next prime is 163220251202461. The reversal of 163220251202431 is 134202152022361.

It is a balanced prime because it is at equal distance from previous prime (163220251202401) and next prime (163220251202461).

It is a cyclic number.

It is not a de Polignac number, because 163220251202431 - 2²⁹ = 163219714331519 is a prime.

It is a super-2 number, since 2×163220251202431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163220251202401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81610125601215 + 81610125601216.

It is an arithmetic number, because the mean of its divisors is an integer number (81610125601216).

Almost surely, 2^{163220251202431} is an apocalyptic number.

163220251202431 is a deficient number, since it is larger than the sum of its proper divisors (1).

163220251202431 is an equidigital number, since it uses as much as digits as its factorization.

163220251202431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 163220251202431 in words is "one hundred sixty-three trillion, two hundred twenty billion, two hundred fifty-one million, two hundred two thousand, four hundred thirty-one".