100561056105513 has 4 divisors (see below), whose sum is σ = 134081408140688. Its totient is φ = 67040704070340.

The previous prime is 100561056105511. The next prime is 100561056105563. The reversal of 100561056105513 is 315501650165001.

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 100561056105513 - 2¹ = 100561056105511 is a prime.

It is a super-2 number, since 2×100561056105513² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100561056105511) 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, 16760176017583 + ... + 16760176017588.

It is an arithmetic number, because the mean of its divisors is an integer number (33520352035172).

Almost surely, 2^{100561056105513} is an apocalyptic number.

It is an amenable number.

100561056105513 is a deficient number, since it is larger than the sum of its proper divisors (33520352035175).

100561056105513 is an equidigital number, since it uses as much as digits as its factorization.

100561056105513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33520352035174.

The product of its (nonzero) digits is 67500, while the sum is 39.

The spelling of 100561056105513 in words is "one hundred trillion, five hundred sixty-one billion, fifty-six million, one hundred five thousand, five hundred thirteen".