127531712477 has 16 divisors (see below), whose sum is σ = 140320131840. Its totient is φ = 115170768192.

The previous prime is 127531712461. The next prime is 127531712509. The reversal of 127531712477 is 774217135721.

It is a cyclic number.

It is not a de Polignac number, because 127531712477 - 2⁴ = 127531712461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127531712447) 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, 1535303 + ... + 1616235.

It is an arithmetic number, because the mean of its divisors is an integer number (8770008240).

Almost surely, 2^127531712477 is an apocalyptic number.

It is an amenable number.

127531712477 is a deficient number, since it is larger than the sum of its proper divisors (12788419363).

127531712477 is a wasteful number, since it uses less digits than its factorization.

127531712477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83572.

The product of its digits is 576240, while the sum is 47.

The spelling of 127531712477 in words is "one hundred twenty-seven billion, five hundred thirty-one million, seven hundred twelve thousand, four hundred seventy-seven".