7770140872 has 16 divisors (see below), whose sum is σ = 15689707740. Its totient is φ = 3586218816.

The previous prime is 7770140869. The next prime is 7770140879. The reversal of 7770140872 is 2780410777.

It can be written as a sum of positive squares in 2 ways, for example, as 5769010116 + 2001130756 = 75954^2 + 44734^2 .

It is not an unprimeable number, because it can be changed into a prime (7770140879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37356343 + ... + 37356550.

Almost surely, 2^7770140872 is an apocalyptic number.

It is an amenable number.

7770140872 is an abundant number, since it is smaller than the sum of its proper divisors (7919566868).

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

7770140872 is a wasteful number, since it uses less digits than its factorization.

7770140872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74712912 (or 74712908 counting only the distinct ones).

The product of its (nonzero) digits is 153664, while the sum is 43.

The square root of 7770140872 is about 88148.4025493372. The cubic root of 7770140872 is about 1980.6586313446.

The spelling of 7770140872 in words is "seven billion, seven hundred seventy million, one hundred forty thousand, eight hundred seventy-two".