163955881332139 has 8 divisors (see below), whose sum is σ = 176574775406960. Its totient is φ = 151337973429216.

The previous prime is 163955881332121. The next prime is 163955881332193. The reversal of 163955881332139 is 931233188559361.

163955881332139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 163955881332139 - 2⁷ = 163955881332011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163955881335139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246197652 + ... + 246862705.

It is an arithmetic number, because the mean of its divisors is an integer number (22071846925870).

Almost surely, 2^{163955881332139} is an apocalyptic number.

163955881332139 is a deficient number, since it is larger than the sum of its proper divisors (12618894074821).

163955881332139 is a wasteful number, since it uses less digits than its factorization.

163955881332139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493085949.

The product of its digits is 125971200, while the sum is 67.

The spelling of 163955881332139 in words is "one hundred sixty-three trillion, nine hundred fifty-five billion, eight hundred eighty-one million, three hundred thirty-two thousand, one hundred thirty-nine".