163662354006394 has 4 divisors (see below), whose sum is σ = 245493531009594. Its totient is φ = 81831177003196.

The previous prime is 163662354006367. The next prime is 163662354006397. The reversal of 163662354006394 is 493600453266361.

163662354006394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 163224259605625 + 438094400769 = 12775925^2 + 661887^2 .

It is a super-2 number, since 2×163662354006394² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (163662354006397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40915588501597 + ... + 40915588501600.

Almost surely, 2^{163662354006394} is an apocalyptic number.

163662354006394 is a deficient number, since it is larger than the sum of its proper divisors (81831177003200).

163662354006394 is an equidigital number, since it uses as much as digits as its factorization.

163662354006394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81831177003199.

The product of its (nonzero) digits is 50388480, while the sum is 58.

The spelling of 163662354006394 in words is "one hundred sixty-three trillion, six hundred sixty-two billion, three hundred fifty-four million, six thousand, three hundred ninety-four".