7881080775 has 48 divisors (see below), whose sum is σ = 13730966400. Its totient is φ = 3977631360.

The previous prime is 7881080759. The next prime is 7881080777. The reversal of 7881080775 is 5770801887.

It is a happy number.

It is not a de Polignac number, because 7881080775 - 2⁴ = 7881080759 is a prime.

It is a super-2 number, since 2×7881080775² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7881080777) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1577832 + ... + 1582818.

It is an arithmetic number, because the mean of its divisors is an integer number (286061800).

Almost surely, 2^7881080775 is an apocalyptic number.

7881080775 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7881080775 is a deficient number, since it is larger than the sum of its proper divisors (5849885625).

7881080775 is a wasteful number, since it uses less digits than its factorization.

7881080775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6128 (or 6123 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 51.

The square root of 7881080775 is about 88775.4514209869. The cubic root of 7881080775 is about 1990.0405516008.

The spelling of 7881080775 in words is "seven billion, eight hundred eighty-one million, eighty thousand, seven hundred seventy-five".