7938825566 has 12 divisors (see below), whose sum is σ = 13609986792. Its totient is φ = 3402210936.

The previous prime is 7938825553. The next prime is 7938825571. The reversal of 7938825566 is 6655288397.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321476 + ... + 345288.

It is an arithmetic number, because the mean of its divisors is an integer number (1134165566).

Almost surely, 2^7938825566 is an apocalyptic number.

7938825566 is a deficient number, since it is larger than the sum of its proper divisors (5671161226).

7938825566 is an frugal number, since it uses more digits than its factorization.

7938825566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47635 (or 23822 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 59.

The square root of 7938825566 is about 89100.0873512479. The cubic root of 7938825566 is about 1994.8890808783.

The spelling of 7938825566 in words is "seven billion, nine hundred thirty-eight million, eight hundred twenty-five thousand, five hundred sixty-six".