127792440856 has 8 divisors (see below), whose sum is σ = 239610826620. Its totient is φ = 63896220424.

The previous prime is 127792440823. The next prime is 127792440857. The reversal of 127792440856 is 658044297721.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 127792440797 and 127792440806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127792440857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7987027546 + ... + 7987027561.

Almost surely, 2^127792440856 is an apocalyptic number.

It is an amenable number.

127792440856 is a deficient number, since it is larger than the sum of its proper divisors (111818385764).

127792440856 is a wasteful number, since it uses less digits than its factorization.

127792440856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15974055113 (or 15974055109 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 127792440856 in words is "one hundred twenty-seven billion, seven hundred ninety-two million, four hundred forty thousand, eight hundred fifty-six".