163394265385 has 64 divisors (see below), whose sum is σ = 227161428480. Its totient is φ = 111875512320.

The previous prime is 163394265367. The next prime is 163394265427. The reversal of 163394265385 is 583562493361.

It is not a de Polignac number, because 163394265385 - 2⁷ = 163394265257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9614826 + ... + 9631804.

It is an arithmetic number, because the mean of its divisors is an integer number (3549397320).

Almost surely, 2^163394265385 is an apocalyptic number.

It is an amenable number.

163394265385 is a deficient number, since it is larger than the sum of its proper divisors (63767163095).

163394265385 is a wasteful number, since it uses less digits than its factorization.

163394265385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17218.

The product of its digits is 13996800, while the sum is 55.

The spelling of 163394265385 in words is "one hundred sixty-three billion, three hundred ninety-four million, two hundred sixty-five thousand, three hundred eighty-five".