7881977260 has 24 divisors (see below), whose sum is σ = 16554555360. Its totient is φ = 3152333184.

The previous prime is 7881977231. The next prime is 7881977263. The reversal of 7881977260 is 627791887.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7881977263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135577 + ... + 184783.

It is an arithmetic number, because the mean of its divisors is an integer number (689773140).

Almost surely, 2^7881977260 is an apocalyptic number.

It is an amenable number.

7881977260 is an abundant number, since it is smaller than the sum of its proper divisors (8672578100).

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

7881977260 is a wasteful number, since it uses less digits than its factorization.

7881977260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57225 (or 57223 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 55.

The square root of 7881977260 is about 88780.5004491414. The cubic root of 7881977260 is about 1990.1160054593.

The spelling of 7881977260 in words is "seven billion, eight hundred eighty-one million, nine hundred seventy-seven thousand, two hundred sixty".