77127539740 has 24 divisors (see below), whose sum is σ = 162072192240. Its totient is φ = 30831138048.

The previous prime is 77127539729. The next prime is 77127539771. The reversal of 77127539740 is 4793572177.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210530 + ... + 1272649.

It is an arithmetic number, because the mean of its divisors is an integer number (6753008010).

Almost surely, 2^77127539740 is an apocalyptic number.

It is an amenable number.

77127539740 is an abundant number, since it is smaller than the sum of its proper divisors (84944652500).

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

77127539740 is a wasteful number, since it uses less digits than its factorization.

77127539740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484741 (or 2484739 counting only the distinct ones).

The product of its (nonzero) digits is 2593080, while the sum is 52.

The spelling of 77127539740 in words is "seventy-seven billion, one hundred twenty-seven million, five hundred thirty-nine thousand, seven hundred forty".