100402544556 has 18 divisors (see below), whose sum is σ = 253795321052. Its totient is φ = 33467514840.

The previous prime is 100402544519. The next prime is 100402544581. The reversal of 100402544556 is 655445204001.

100402544556 is a `hidden beast` number, since 1 + 0 + 0 + 40 + 25 + 44 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2788959571 = 100402544556 / (1 + 0 + 0 + 4 + 0 + 2 + 5 + 4 + 4 + 5 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 100402544556.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1394479750 + ... + 1394479821.

Almost surely, 2^100402544556 is an apocalyptic number.

It is an amenable number.

100402544556 is an abundant number, since it is smaller than the sum of its proper divisors (153392776496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100402544556 is a wasteful number, since it uses less digits than its factorization.

100402544556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788959581 (or 2788959576 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 100402544556 its reverse (655445204001), we get a palindrome (755847748557).

The spelling of 100402544556 in words is "one hundred billion, four hundred two million, five hundred forty-four thousand, five hundred fifty-six".