1090821790944 has 96 divisors (see below), whose sum is σ = 3181912020000. Its totient is φ = 363567439872.

The previous prime is 1090821790937. The next prime is 1090821790957. The reversal of 1090821790944 is 4490971280901.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1090821790944² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8428032 + ... + 8556480.

It is an arithmetic number, because the mean of its divisors is an integer number (33144916875).

Almost surely, 2^{1090821790944} is an apocalyptic number.

It is an amenable number.

1090821790944 is an abundant number, since it is smaller than the sum of its proper divisors (2091090229056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1090821790944 is a wasteful number, since it uses less digits than its factorization.

1090821790944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138297 (or 138283 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 1090821790944 in words is "one trillion, ninety billion, eight hundred twenty-one million, seven hundred ninety thousand, nine hundred forty-four".