163662354006403 has 6 divisors (see below), whose sum is σ = 190382738334036. Its totient is φ = 140282017719732.

The previous prime is 163662354006397. The next prime is 163662354006421. The reversal of 163662354006403 is 304600453266361.

It is not a de Polignac number, because 163662354006403 - 2⁴¹ = 161463330750851 is a prime.

It is a super-2 number, since 2×163662354006403² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 3340048040947 = 163662354006403 / (1 + 6 + 3 + 6 + 6 + 2 + 3 + 5 + 4 + 0 + 0 + 6 + 4 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163662354006433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1670024020425 + ... + 1670024020522.

It is an arithmetic number, because the mean of its divisors is an integer number (31730456389006).

Almost surely, 2^{163662354006403} is an apocalyptic number.

163662354006403 is a deficient number, since it is larger than the sum of its proper divisors (26720384327633).

163662354006403 is an equidigital number, since it uses as much as digits as its factorization.

163662354006403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340048040961 (or 3340048040954 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 49.

The spelling of 163662354006403 in words is "one hundred sixty-three trillion, six hundred sixty-two billion, three hundred fifty-four million, six thousand, four hundred three".