7883478881 has 2 divisors, whose sum is σ = 7883478882. Its totient is φ = 7883478880.

The previous prime is 7883478857. The next prime is 7883478907. The reversal of 7883478881 is 1888743887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5782081600 + 2101397281 = 76040^2 + 45841^2 .

It is a cyclic number.

It is not a de Polignac number, because 7883478881 - 2²² = 7879284577 is a prime.

It is a super-2 number, since 2×7883478881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7883472881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3941739440 + 3941739441.

It is an arithmetic number, because the mean of its divisors is an integer number (3941739441).

Almost surely, 2^7883478881 is an apocalyptic number.

It is an amenable number.

7883478881 is a deficient number, since it is larger than the sum of its proper divisors (1).

7883478881 is an equidigital number, since it uses as much as digits as its factorization.

7883478881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19267584, while the sum is 62.

The square root of 7883478881 is about 88788.9569766421. The cubic root of 7883478881 is about 1990.2423785817.

The spelling of 7883478881 in words is "seven billion, eight hundred eighty-three million, four hundred seventy-eight thousand, eight hundred eighty-one".