163426620671 has 4 divisors (see below), whose sum is σ = 163427817072. Its totient is φ = 163425424272.

The previous prime is 163426620629. The next prime is 163426620689. The reversal of 163426620671 is 176026624361.

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

It is a cyclic number.

It is not a de Polignac number, because 163426620671 - 2²² = 163422426367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163426620611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362291 + ... + 676836.

It is an arithmetic number, because the mean of its divisors is an integer number (40856954268).

Almost surely, 2^163426620671 is an apocalyptic number.

163426620671 is a deficient number, since it is larger than the sum of its proper divisors (1196401).

163426620671 is a wasteful number, since it uses less digits than its factorization.

163426620671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196400.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 163426620671 in words is "one hundred sixty-three billion, four hundred twenty-six million, six hundred twenty thousand, six hundred seventy-one".