163634215075 has 12 divisors (see below), whose sum is σ = 203105191408. Its totient is φ = 130779136800.

The previous prime is 163634215027. The next prime is 163634215081. The reversal of 163634215075 is 570512436361.

It is not a de Polignac number, because 163634215075 - 2¹¹ = 163634213027 is a prime.

It is a super-2 number, since 2×163634215075² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3179847 + ... + 3230896.

Almost surely, 2^163634215075 is an apocalyptic number.

163634215075 is a deficient number, since it is larger than the sum of its proper divisors (39470976333).

163634215075 is a wasteful number, since it uses less digits than its factorization.

163634215075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411774 (or 6411769 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 163634215075 in words is "one hundred sixty-three billion, six hundred thirty-four million, two hundred fifteen thousand, seventy-five".