361683871681 has 16 divisors (see below), whose sum is σ = 394949721600. Its totient is φ = 328482472320.

The previous prime is 361683871657. The next prime is 361683871687. The reversal of 361683871681 is 186178386163.

It is a cyclic number.

It is not a de Polignac number, because 361683871681 - 2⁵ = 361683871649 is a prime.

It is a super-2 number, since 2×361683871681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361683871687) 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, 76902576 + ... + 76907278.

It is an arithmetic number, because the mean of its divisors is an integer number (24684357600).

Almost surely, 2^361683871681 is an apocalyptic number.

It is an amenable number.

361683871681 is a deficient number, since it is larger than the sum of its proper divisors (33265849919).

361683871681 is a wasteful number, since it uses less digits than its factorization.

361683871681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056.

The product of its digits is 6967296, while the sum is 58.

The spelling of 361683871681 in words is "three hundred sixty-one billion, six hundred eighty-three million, eight hundred seventy-one thousand, six hundred eighty-one".