127291564474 has 4 divisors (see below), whose sum is σ = 190937346714. Its totient is φ = 63645782236.

The previous prime is 127291564451. The next prime is 127291564483. The reversal of 127291564474 is 474465192721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 70976952225 + 56314612249 = 266415^2 + 237307^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31822891117 + ... + 31822891120.

Almost surely, 2^127291564474 is an apocalyptic number.

127291564474 is a deficient number, since it is larger than the sum of its proper divisors (63645782240).

127291564474 is an equidigital number, since it uses as much as digits as its factorization.

127291564474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63645782239.

The product of its digits is 3386880, while the sum is 52.

The spelling of 127291564474 in words is "one hundred twenty-seven billion, two hundred ninety-one million, five hundred sixty-four thousand, four hundred seventy-four".