127777640139 has 24 divisors (see below), whose sum is σ = 186431038560. Its totient is φ = 84325727232.

The previous prime is 127777640113. The next prime is 127777640143. The reversal of 127777640139 is 931046777721.

It is not a de Polignac number, because 127777640139 - 2²⁴ = 127760862923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127777640339) 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, 2526997 + ... + 2577065.

It is an arithmetic number, because the mean of its divisors is an integer number (7767959940).

Almost surely, 2^127777640139 is an apocalyptic number.

127777640139 is a deficient number, since it is larger than the sum of its proper divisors (58653398421).

127777640139 is a wasteful number, since it uses less digits than its factorization.

127777640139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52931 (or 52928 counting only the distinct ones).

The product of its (nonzero) digits is 3111696, while the sum is 54.

The spelling of 127777640139 in words is "one hundred twenty-seven billion, seven hundred seventy-seven million, six hundred forty thousand, one hundred thirty-nine".