127640388029 has 16 divisors (see below), whose sum is σ = 163437046656. Its totient is φ = 96771931200.

The previous prime is 127640388019. The next prime is 127640388037. The reversal of 127640388029 is 920883046721.

It is not a de Polignac number, because 127640388029 - 2²⁴ = 127623610813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127640388019) 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, 22398062 + ... + 22403759.

It is an arithmetic number, because the mean of its divisors is an integer number (10214815416).

Almost surely, 2^127640388029 is an apocalyptic number.

It is an amenable number.

127640388029 is a deficient number, since it is larger than the sum of its proper divisors (35796658627).

127640388029 is a wasteful number, since it uses less digits than its factorization.

127640388029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44801876.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 127640388029 in words is "one hundred twenty-seven billion, six hundred forty million, three hundred eighty-eight thousand, twenty-nine".