77872727880 has 96 divisors (see below), whose sum is σ = 261250479360. Its totient is φ = 20096184960.

The previous prime is 77872727879. The next prime is 77872727887. The reversal of 77872727880 is 8872727877.

It is not an unprimeable number, because it can be changed into a prime (77872727887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3477762 + ... + 3500081.

It is an arithmetic number, because the mean of its divisors is an integer number (2721359160).

Almost surely, 2^77872727880 is an apocalyptic number.

It is an amenable number.

77872727880 is an abundant number, since it is smaller than the sum of its proper divisors (183377751480).

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

77872727880 is a wasteful number, since it uses less digits than its factorization.

77872727880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6977891 (or 6977884 counting only the distinct ones).

The product of its (nonzero) digits is 34420736, while the sum is 63.

The spelling of 77872727880 in words is "seventy-seven billion, eight hundred seventy-two million, seven hundred twenty-seven thousand, eight hundred eighty".