127131844477 has 16 divisors (see below), whose sum is σ = 144758638080. Its totient is φ = 110519345200.

The previous prime is 127131844457. The next prime is 127131844487. The reversal of 127131844477 is 774448131721.

It is not a de Polignac number, because 127131844477 - 2¹¹ = 127131842429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127131844477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127131844457) 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, 889602 + ... + 1022572.

It is an arithmetic number, because the mean of its divisors is an integer number (9047414880).

Almost surely, 2^127131844477 is an apocalyptic number.

It is an amenable number.

127131844477 is a deficient number, since it is larger than the sum of its proper divisors (17626793603).

127131844477 is a wasteful number, since it uses less digits than its factorization.

127131844477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136784.

The product of its digits is 1053696, while the sum is 49.

The spelling of 127131844477 in words is "one hundred twenty-seven billion, one hundred thirty-one million, eight hundred forty-four thousand, four hundred seventy-seven".