127761664371 has 64 divisors (see below), whose sum is σ = 193349646336. Its totient is φ = 74364998400.

The previous prime is 127761664367. The next prime is 127761664397. The reversal of 127761664371 is 173466167721.

It is not a de Polignac number, because 127761664371 - 2² = 127761664367 is a prime.

Its product of digits (1778112) is a multiple of the sum of its prime divisors (2592).

It is not an unprimeable number, because it can be changed into a prime (127761664321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77103375 + ... + 77105031.

It is an arithmetic number, because the mean of its divisors is an integer number (3021088224).

Almost surely, 2^127761664371 is an apocalyptic number.

127761664371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

127761664371 is a deficient number, since it is larger than the sum of its proper divisors (65587981965).

127761664371 is a wasteful number, since it uses less digits than its factorization.

127761664371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592.

The product of its digits is 1778112, while the sum is 51.

The spelling of 127761664371 in words is "one hundred twenty-seven billion, seven hundred sixty-one million, six hundred sixty-four thousand, three hundred seventy-one".