100402544555 has 8 divisors (see below), whose sum is σ = 120495844944. Its totient is φ = 80313508000.

The previous prime is 100402544519. The next prime is 100402544581. The reversal of 100402544555 is 555445204001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-100402544555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013921 + ... + 1108530.

It is an arithmetic number, because the mean of its divisors is an integer number (15061980618).

Almost surely, 2^100402544555 is an apocalyptic number.

100402544555 is a deficient number, since it is larger than the sum of its proper divisors (20093300389).

100402544555 is an equidigital number, since it uses as much as digits as its factorization.

100402544555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131917.

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 100402544555 its reverse (555445204001), we get a palindrome (655847748556).

The spelling of 100402544555 in words is "one hundred billion, four hundred two million, five hundred forty-four thousand, five hundred fifty-five".