127172147261 has 8 divisors (see below), whose sum is σ = 131282133504. Its totient is φ = 123062639760.

The previous prime is 127172147251. The next prime is 127172147279. The reversal of 127172147261 is 162741271721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127172147261 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 (127172147251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465695 + ... + 686451.

It is an arithmetic number, because the mean of its divisors is an integer number (16410266688).

Almost surely, 2^127172147261 is an apocalyptic number.

It is an amenable number.

127172147261 is a deficient number, since it is larger than the sum of its proper divisors (4109986243).

127172147261 is a wasteful number, since it uses less digits than its factorization.

127172147261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239371.

The product of its digits is 65856, while the sum is 41.

The spelling of 127172147261 in words is "one hundred twenty-seven billion, one hundred seventy-two million, one hundred forty-seven thousand, two hundred sixty-one".