361881028863 has 56 divisors (see below), whose sum is σ = 551868413776. Its totient is φ = 237299035320.

The previous prime is 361881028849. The next prime is 361881028867. The reversal of 361881028863 is 368820188163.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

361881028863 is a `hidden beast` number, since 3 + 618 + 8 + 10 + 2 + 8 + 8 + 6 + 3 = 666.

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=4941.

It is not a de Polignac number, because 361881028863 - 2⁶ = 361881028799 is a prime.

It is a Duffinian number.

It is an enlightened number because it begins with the concatenation of its prime factors (361).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361881028867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5932475853 + ... + 5932475913.

Almost surely, 2^361881028863 is an apocalyptic number.

361881028863 is a deficient number, since it is larger than the sum of its proper divisors (189987384913).

361881028863 is an frugal number, since it uses more digits than its factorization.

361881028863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 361881028863 in words is "three hundred sixty-one billion, eight hundred eighty-one million, twenty-eight thousand, eight hundred sixty-three".