127795567778 has 32 divisors (see below), whose sum is σ = 195948730368. Its totient is φ = 62494462800.

The previous prime is 127795567771. The next prime is 127795567787. The reversal of 127795567778 is 877765597721.

It is not an unprimeable number, because it can be changed into a prime (127795567771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12180851 + ... + 12191337.

It is an arithmetic number, because the mean of its divisors is an integer number (6123397824).

Almost surely, 2^127795567778 is an apocalyptic number.

127795567778 is a deficient number, since it is larger than the sum of its proper divisors (68153162590).

127795567778 is a wasteful number, since it uses less digits than its factorization.

127795567778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11198.

The product of its digits is 363031200, while the sum is 71.

The spelling of 127795567778 in words is "one hundred twenty-seven billion, seven hundred ninety-five million, five hundred sixty-seven thousand, seven hundred seventy-eight".