7920549780 has 96 divisors (see below), whose sum is σ = 26054759808. Its totient is φ = 1772428800.

The previous prime is 7920549761. The next prime is 7920549827. The reversal of 7920549780 is 879450297.

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 31 ways as a sum of consecutive naturals, for example, 452991 + ... + 470150.

It is an arithmetic number, because the mean of its divisors is an integer number (271403748).

Almost surely, 2^7920549780 is an apocalyptic number.

It is an amenable number.

7920549780 is an abundant number, since it is smaller than the sum of its proper divisors (18134210028).

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

7920549780 is a wasteful number, since it uses less digits than its factorization.

7920549780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923177 (or 923175 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 7920549780 is about 88997.4706382153. The cubic root of 7920549780 is about 1993.3571087594.

The spelling of 7920549780 in words is "seven billion, nine hundred twenty million, five hundred forty-nine thousand, seven hundred eighty".