7813908450840 has 64 divisors (see below), whose sum is σ = 23443394492160. Its totient is φ = 2083560552320.

The previous prime is 7813908450793. The next prime is 7813908450871. The reversal of 7813908450840 is 480548093187.

It is a super-2 number, since 2×7813908450840² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620766 + ... + 4001645.

It is an arithmetic number, because the mean of its divisors is an integer number (366303038940).

Almost surely, 2^{7813908450840} is an apocalyptic number.

It is an amenable number.

7813908450840 is an abundant number, since it is smaller than the sum of its proper divisors (15629486041320).

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

7813908450840 is a wasteful number, since it uses less digits than its factorization.

7813908450840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636512 (or 4636508 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 7813908450840 in words is "seven trillion, eight hundred thirteen billion, nine hundred eight million, four hundred fifty thousand, eight hundred forty".