127920524665 has 32 divisors (see below), whose sum is σ = 166135297536. Its totient is φ = 94194447360.

The previous prime is 127920524663. The next prime is 127920524681. The reversal of 127920524665 is 566425029721.

It is not a de Polignac number, because 127920524665 - 2¹ = 127920524663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127920524663) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 1355404 + ... + 1446706.

It is an arithmetic number, because the mean of its divisors is an integer number (5191728048).

Almost surely, 2^127920524665 is an apocalyptic number.

It is an amenable number.

127920524665 is a deficient number, since it is larger than the sum of its proper divisors (38214772871).

127920524665 is a wasteful number, since it uses less digits than its factorization.

127920524665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91689.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 127920524665 in words is "one hundred twenty-seven billion, nine hundred twenty million, five hundred twenty-four thousand, six hundred sixty-five".