127171002220538 has 8 divisors (see below), whose sum is σ = 197334313790580. Its totient is φ = 61392897623680.

The previous prime is 127171002220519. The next prime is 127171002220601. The reversal of 127171002220538 is 835022200171721.

It can be written as a sum of positive squares in 2 ways, for example, as 108437920702609 + 18733081517929 = 10413353^2 + 4328173^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 127171002220495 and 127171002220504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096301743223 + ... + 1096301743338.

Almost surely, 2^{127171002220538} is an apocalyptic number.

127171002220538 is a deficient number, since it is larger than the sum of its proper divisors (70163311570042).

127171002220538 is a wasteful number, since it uses less digits than its factorization.

127171002220538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192603486592.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 127171002220538 in words is "one hundred twenty-seven trillion, one hundred seventy-one billion, two million, two hundred twenty thousand, five hundred thirty-eight".