100561045259 has 2 divisors, whose sum is σ = 100561045260. Its totient is φ = 100561045258.

The previous prime is 100561045243. The next prime is 100561045309. The reversal of 100561045259 is 952540165001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100561045259 - 2⁴ = 100561045243 is a prime.

It is a super-2 number, since 2×100561045259² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100561047259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50280522629 + 50280522630.

It is an arithmetic number, because the mean of its divisors is an integer number (50280522630).

Almost surely, 2^100561045259 is an apocalyptic number.

100561045259 is a deficient number, since it is larger than the sum of its proper divisors (1).

100561045259 is an equidigital number, since it uses as much as digits as its factorization.

100561045259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 100561045259 in words is "one hundred billion, five hundred sixty-one million, forty-five thousand, two hundred fifty-nine".