10100000561 has 4 divisors (see below), whose sum is σ = 11542857792. Its totient is φ = 8657143332.

The previous prime is 10100000527. The next prime is 10100000567. The reversal of 10100000561 is 16500000101.

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.

It is a cyclic number.

It is not a de Polignac number, because 10100000561 - 2⁶ = 10100000497 is a prime.

It is a super-2 number, since 2×10100000561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10100000567) 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, 721428605 + ... + 721428618.

It is an arithmetic number, because the mean of its divisors is an integer number (2885714448).

Almost surely, 2^10100000561 is an apocalyptic number.

It is an amenable number.

10100000561 is a deficient number, since it is larger than the sum of its proper divisors (1442857231).

10100000561 is an equidigital number, since it uses as much as digits as its factorization.

10100000561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442857230.

The product of its (nonzero) digits is 30, while the sum is 14.

Adding to 10100000561 its reverse (16500000101), we get a palindrome (26600000662).

The spelling of 10100000561 in words is "ten billion, one hundred million, five hundred sixty-one", and thus it is an aban number.