163643802827775 has 48 divisors (see below), whose sum is σ = 274607522505600. Its totient is φ = 85970427903360.

The previous prime is 163643802827761. The next prime is 163643802827887. The reversal of 163643802827775 is 577728208346361.

It is not a de Polignac number, because 163643802827775 - 2⁷ = 163643802827647 is a prime.

It is a super-2 number, since 2×163643802827775² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (69) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120472336 + ... + 121823114.

It is an arithmetic number, because the mean of its divisors is an integer number (5720990052200).

Almost surely, 2^{163643802827775} is an apocalyptic number.

163643802827775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163643802827775 is a deficient number, since it is larger than the sum of its proper divisors (110963719677825).

163643802827775 is a wasteful number, since it uses less digits than its factorization.

163643802827775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374968 (or 1374963 counting only the distinct ones).

The product of its (nonzero) digits is 568995840, while the sum is 69.

The spelling of 163643802827775 in words is "one hundred sixty-three trillion, six hundred forty-three billion, eight hundred two million, eight hundred twenty-seven thousand, seven hundred seventy-five".