127565726564 has 12 divisors (see below), whose sum is σ = 225326377584. Its totient is φ = 63186761544.

The previous prime is 127565726557. The next prime is 127565726567. The reversal of 127565726564 is 465627565721.

It is not an unprimeable number, because it can be changed into a prime (127565726567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149024954 + ... + 149025809.

It is an arithmetic number, because the mean of its divisors is an integer number (18777198132).

Almost surely, 2^127565726564 is an apocalyptic number.

It is an amenable number.

127565726564 is a deficient number, since it is larger than the sum of its proper divisors (97760651020).

127565726564 is a wasteful number, since it uses less digits than its factorization.

127565726564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298050874 (or 298050872 counting only the distinct ones).

The product of its digits is 21168000, while the sum is 56.

The spelling of 127565726564 in words is "one hundred twenty-seven billion, five hundred sixty-five million, seven hundred twenty-six thousand, five hundred sixty-four".