127533645544 has 8 divisors (see below), whose sum is σ = 239125585410. Its totient is φ = 63766822768.

The previous prime is 127533645541. The next prime is 127533645557. The reversal of 127533645544 is 445546335721.

It can be written as a sum of positive squares in only one way, i.e., 109072988644 + 18460656900 = 330262^2 + 135870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (127533645541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7970852839 + ... + 7970852854.

Almost surely, 2^127533645544 is an apocalyptic number.

It is an amenable number.

127533645544 is a deficient number, since it is larger than the sum of its proper divisors (111591939866).

127533645544 is a wasteful number, since it uses less digits than its factorization.

127533645544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15941705699 (or 15941705695 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 49.

The spelling of 127533645544 in words is "one hundred twenty-seven billion, five hundred thirty-three million, six hundred forty-five thousand, five hundred forty-four".