100610000561 has 4 divisors (see below), whose sum is σ = 114982857792. Its totient is φ = 86237143332.

The previous prime is 100610000549. The next prime is 100610000633. The reversal of 100610000561 is 165000016001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165000016001 = 197 ⋅837563533.

It is a cyclic number.

It is not a de Polignac number, because 100610000561 - 2¹⁴ = 100609984177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100610000761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7186428605 + ... + 7186428618.

It is an arithmetic number, because the mean of its divisors is an integer number (28745714448).

Almost surely, 2^100610000561 is an apocalyptic number.

It is an amenable number.

100610000561 is a deficient number, since it is larger than the sum of its proper divisors (14372857231).

100610000561 is an equidigital number, since it uses as much as digits as its factorization.

100610000561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14372857230.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 100610000561 its reverse (165000016001), we get a palindrome (265610016562).

The spelling of 100610000561 in words is "one hundred billion, six hundred ten million, five hundred sixty-one", and thus it is an aban number.