127640103525 has 72 divisors (see below), whose sum is σ = 249490710144. Its totient is φ = 61863859200.

The previous prime is 127640103523. The next prime is 127640103529. The reversal of 127640103525 is 525301046721.

127640103525 is a `hidden beast` number, since 1 + 2 + 7 + 640 + 1 + 0 + 3 + 5 + 2 + 5 = 666.

It is not a de Polignac number, because 127640103525 - 2¹ = 127640103523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127640103525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127640103523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8424757 + ... + 8439893.

It is an arithmetic number, because the mean of its divisors is an integer number (3465148752).

Almost surely, 2^127640103525 is an apocalyptic number.

127640103525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127640103525 is a deficient number, since it is larger than the sum of its proper divisors (121850606619).

127640103525 is a wasteful number, since it uses less digits than its factorization.

127640103525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18571 (or 18563 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 127640103525 in words is "one hundred twenty-seven billion, six hundred forty million, one hundred three thousand, five hundred twenty-five".