100401331255 has 16 divisors (see below), whose sum is σ = 121199984640. Its totient is φ = 79843202208.

The previous prime is 100401331249. The next prime is 100401331301. The reversal of 100401331255 is 552133104001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100401331255 - 2³⁵ = 66041592887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695626 + ... + 827464.

It is an arithmetic number, because the mean of its divisors is an integer number (7574999040).

Almost surely, 2^100401331255 is an apocalyptic number.

100401331255 is a deficient number, since it is larger than the sum of its proper divisors (20798653385).

100401331255 is a wasteful number, since it uses less digits than its factorization.

100401331255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132750.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 100401331255 its reverse (552133104001), we get a palindrome (652534435256).

The spelling of 100401331255 in words is "one hundred billion, four hundred one million, three hundred thirty-one thousand, two hundred fifty-five".