1791996045840 has 2560 divisors, whose sum is σ = 8808236236800. Its totient is φ = 322486272000.

The previous prime is 1791996045839. The next prime is 1791996045881. The reversal of 1791996045840 is 485406991971.

1791996045840 is a `hidden beast` number, since 1 + 7 + 9 + 19 + 9 + 604 + 5 + 8 + 4 + 0 = 666.

It is a super-2 number, since 2×1791996045840² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 7435668120 + ... + 7435668360.

It is an arithmetic number, because the mean of its divisors is an integer number (3440717280).

Almost surely, 2^{1791996045840} is an apocalyptic number.

1791996045840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1791996045840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4404118118400).

1791996045840 is an abundant number, since it is smaller than the sum of its proper divisors (7016240190960).

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

1791996045840 is a wasteful number, since it uses less digits than its factorization.

1791996045840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 1791996045840 in words is "one trillion, seven hundred ninety-one billion, nine hundred ninety-six million, forty-five thousand, eight hundred forty".