163352991121786 has 8 divisors (see below), whose sum is σ = 245802450364020. Its totient is φ = 81418841000448.

The previous prime is 163352991121777. The next prime is 163352991121813. The reversal of 163352991121786 is 687121199253361.

It can be written as a sum of positive squares in 2 ways, for example, as 155897224346161 + 7455766775625 = 12485881^2 + 2730525^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128827279431 + ... + 128827280698.

Almost surely, 2^{163352991121786} is an apocalyptic number.

163352991121786 is a deficient number, since it is larger than the sum of its proper divisors (82449459242234).

163352991121786 is a wasteful number, since it uses less digits than its factorization.

163352991121786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257654560448.

The product of its digits is 29393280, while the sum is 64.

The spelling of 163352991121786 in words is "one hundred sixty-three trillion, three hundred fifty-two billion, nine hundred ninety-one million, one hundred twenty-one thousand, seven hundred eighty-six".