163481130681 has 16 divisors (see below), whose sum is σ = 248129464320. Its totient is φ = 94771669520.

The previous prime is 163481130671. The next prime is 163481130713. The reversal of 163481130681 is 186031184361.

It is not a de Polignac number, because 163481130681 - 2³⁵ = 129121392313 is a prime.

It is a super-2 number, since 2×163481130681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163481130601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107694321 + ... + 107695838.

It is an arithmetic number, because the mean of its divisors is an integer number (15508091520).

Almost surely, 2^163481130681 is an apocalyptic number.

163481130681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163481130681 is a deficient number, since it is larger than the sum of its proper divisors (84648333639).

163481130681 is a wasteful number, since it uses less digits than its factorization.

163481130681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215390196.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 163481130681 in words is "one hundred sixty-three billion, four hundred eighty-one million, one hundred thirty thousand, six hundred eighty-one".