101105005500561 has 4 divisors (see below), whose sum is σ = 134806674000752. Its totient is φ = 67403337000372.

The previous prime is 101105005500557. The next prime is 101105005500581. The reversal of 101105005500561 is 165005500501101.

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 not a de Polignac number, because 101105005500561 - 2² = 101105005500557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101105005500581) 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, 16850834250091 + ... + 16850834250096.

It is an arithmetic number, because the mean of its divisors is an integer number (33701668500188).

Almost surely, 2^{101105005500561} is an apocalyptic number.

It is an amenable number.

101105005500561 is a deficient number, since it is larger than the sum of its proper divisors (33701668500191).

101105005500561 is an equidigital number, since it uses as much as digits as its factorization.

101105005500561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33701668500190.

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 101105005500561 in words is "one hundred one trillion, one hundred five billion, five million, five hundred thousand, five hundred sixty-one".