163220251213323 has 12 divisors (see below), whose sum is σ = 235774310745688. Its totient is φ = 108808088965920.

The previous prime is 163220251213319. The next prime is 163220251213333. The reversal of 163220251213323 is 323312152022361.

163220251213323 is a `hidden beast` number, since 1 + 6 + 3 + 2 + 2 + 0 + 2 + 512 + 133 + 2 + 3 = 666.

It is not a de Polignac number, because 163220251213323 - 2² = 163220251213319 is a prime.

It is a super-2 number, since 2×163220251213323² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163220251213333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450795898 + ... + 451157823.

Almost surely, 2^{163220251213323} is an apocalyptic number.

163220251213323 is a deficient number, since it is larger than the sum of its proper divisors (72554059532365).

163220251213323 is a wasteful number, since it uses less digits than its factorization.

163220251213323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901973834 (or 901973831 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 163220251213323 in words is "one hundred sixty-three trillion, two hundred twenty billion, two hundred fifty-one million, two hundred thirteen thousand, three hundred twenty-three".