100561045255 has 16 divisors (see below), whose sum is σ = 131650781184. Its totient is φ = 73131288480.

The previous prime is 100561045243. The next prime is 100561045259. The reversal of 100561045255 is 552540165001.

It is not a de Polignac number, because 100561045255 - 2¹¹ = 100561043207 is a prime.

It is a super-2 number, since 2×100561045255² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100561045255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100561045259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1275514 + ... + 1352056.

It is an arithmetic number, because the mean of its divisors is an integer number (8228173824).

Almost surely, 2^100561045255 is an apocalyptic number.

100561045255 is a deficient number, since it is larger than the sum of its proper divisors (31089735929).

100561045255 is a wasteful number, since it uses less digits than its factorization.

100561045255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100446.

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 100561045255 in words is "one hundred billion, five hundred sixty-one million, forty-five thousand, two hundred fifty-five".