7880081980 has 24 divisors (see below), whose sum is σ = 17267658912. Its totient is φ = 3014987712.

The previous prime is 7880081977. The next prime is 7880081987. The reversal of 7880081980 is 891800887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7880081987) 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, 8564847 + ... + 8565766.

It is an arithmetic number, because the mean of its divisors is an integer number (719485788).

Almost surely, 2^7880081980 is an apocalyptic number.

It is an amenable number.

7880081980 is an abundant number, since it is smaller than the sum of its proper divisors (9387576932).

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

7880081980 is a wasteful number, since it uses less digits than its factorization.

7880081980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17130645 (or 17130643 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 49.

The square root of 7880081980 is about 88769.8258418929. The cubic root of 7880081980 is about 1989.9564799452.

The spelling of 7880081980 in words is "seven billion, eight hundred eighty million, eighty-one thousand, nine hundred eighty".