1089740864979 has 64 divisors (see below), whose sum is σ = 1757622881280. Its totient is φ = 663287823360.

The previous prime is 1089740864963. The next prime is 1089740864981. The reversal of 1089740864979 is 9794680479801.

1089740864979 is a `hidden beast` number, since 1 + 0 + 8 + 97 + 40 + 8 + 6 + 497 + 9 = 666.

It is not a de Polignac number, because 1089740864979 - 2⁴ = 1089740864963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1089740864929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60833034 + ... + 60850944.

It is an arithmetic number, because the mean of its divisors is an integer number (27462857520).

Almost surely, 2^{1089740864979} is an apocalyptic number.

1089740864979 is a deficient number, since it is larger than the sum of its proper divisors (667882016301).

1089740864979 is a wasteful number, since it uses less digits than its factorization.

1089740864979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19817 (or 19811 counting only the distinct ones).

The product of its (nonzero) digits is 219469824, while the sum is 72.

The spelling of 1089740864979 in words is "one trillion, eighty-nine billion, seven hundred forty million, eight hundred sixty-four thousand, nine hundred seventy-nine".