7868440145476 has 27 divisors (see below), whose sum is σ = 13864277938231. Its totient is φ = 3907400760224.

The previous prime is 7868440145441. The next prime is 7868440145561. The reversal of 7868440145476 is 6745410448687.

The square root of 7868440145476 is 2805074.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 723639448900 + 7144800696576 = 850670^2 + 2672976^2 .

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 835907346 + ... + 835916758.

Almost surely, 2^{7868440145476} is an apocalyptic number.

7868440145476 is the 2805074-th square number.

It is an amenable number.

7868440145476 is a deficient number, since it is larger than the sum of its proper divisors (5995837792755).

7868440145476 is an frugal number, since it uses more digits than its factorization.

7868440145476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19128 (or 9564 counting only the distinct ones).

The product of its (nonzero) digits is 144506880, while the sum is 64.

Multiplying 7868440145476 by its sum of digits (64), we get a square (503580169310464 = 22440592²).

The spelling of 7868440145476 in words is "seven trillion, eight hundred sixty-eight billion, four hundred forty million, one hundred forty-five thousand, four hundred seventy-six".