1080979561881 has 6 divisors (see below), whose sum is σ = 1561414922730. Its totient is φ = 720653041248.

The previous prime is 1080979561861. The next prime is 1080979561889. The reversal of 1080979561881 is 1881659790801.

1080979561881 is a `hidden beast` number, since 1 + 0 + 8 + 0 + 9 + 7 + 9 + 5 + 618 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 742726817856 + 338252744025 = 861816^2 + 581595^2 .

It is not a de Polignac number, because 1080979561881 - 2⁹ = 1080979561369 is a prime.

It is a super-2 number, since 2×1080979561881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1080979561889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60054420096 + ... + 60054420113.

It is an arithmetic number, because the mean of its divisors is an integer number (260235820455).

Almost surely, 2^{1080979561881} is an apocalyptic number.

It is an amenable number.

1080979561881 is a deficient number, since it is larger than the sum of its proper divisors (480435360849).

1080979561881 is a wasteful number, since it uses less digits than its factorization.

1080979561881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120108840215 (or 120108840212 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 63.

The spelling of 1080979561881 in words is "one trillion, eighty billion, nine hundred seventy-nine million, five hundred sixty-one thousand, eight hundred eighty-one".