127686788427 has 16 divisors (see below), whose sum is σ = 187369838208. Its totient is φ = 76701098880.

The previous prime is 127686788407. The next prime is 127686788461. The reversal of 127686788427 is 724887686721.

It is not a de Polignac number, because 127686788427 - 2¹¹ = 127686786379 is a prime.

It is a super-2 number, since 2×127686788427² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127686788407) 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, 17117053 + ... + 17124510.

It is an arithmetic number, because the mean of its divisors is an integer number (11710614888).

Almost surely, 2^127686788427 is an apocalyptic number.

127686788427 is a deficient number, since it is larger than the sum of its proper divisors (59683049781).

127686788427 is a wasteful number, since it uses less digits than its factorization.

127686788427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34241690.

The product of its digits is 101154816, while the sum is 66.

The spelling of 127686788427 in words is "one hundred twenty-seven billion, six hundred eighty-six million, seven hundred eighty-eight thousand, four hundred twenty-seven".