163445464611215 has 64 divisors (see below), whose sum is σ = 208112791864320. Its totient is φ = 123010656384000.

The previous prime is 163445464611161. The next prime is 163445464611217. The reversal of 163445464611215 is 512116464544361.

It is a happy number.

It is not a de Polignac number, because 163445464611215 - 2³² = 163441169643919 is a prime.

It is a super-2 number, since 2×163445464611215² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163445464611217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19666156910 + ... + 19666165220.

It is an arithmetic number, because the mean of its divisors is an integer number (3251762372880).

Almost surely, 2^{163445464611215} is an apocalyptic number.

163445464611215 is a deficient number, since it is larger than the sum of its proper divisors (44667327253105).

163445464611215 is a wasteful number, since it uses less digits than its factorization.

163445464611215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12224.

The product of its digits is 8294400, while the sum is 53.

The spelling of 163445464611215 in words is "one hundred sixty-three trillion, four hundred forty-five billion, four hundred sixty-four million, six hundred eleven thousand, two hundred fifteen".