100105561110061 has 4 divisors (see below), whose sum is σ = 107805988887772. Its totient is φ = 92405133332352.

The previous prime is 100105561110059. The next prime is 100105561110073. The reversal of 100105561110061 is 160011165501001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28432303518025 + 71673257592036 = 5332195^2 + 8466006^2 .

It is a cyclic number.

It is not a de Polignac number, because 100105561110061 - 2¹ = 100105561110059 is a prime.

It is a super-2 number, since 2×100105561110061² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100105561110031) 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, 3850213888836 + ... + 3850213888861.

It is an arithmetic number, because the mean of its divisors is an integer number (26951497221943).

Almost surely, 2^{100105561110061} is an apocalyptic number.

It is an amenable number.

100105561110061 is a deficient number, since it is larger than the sum of its proper divisors (7700427777711).

100105561110061 is an equidigital number, since it uses as much as digits as its factorization.

100105561110061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7700427777710.

The product of its (nonzero) digits is 900, while the sum is 28.

The spelling of 100105561110061 in words is "one hundred trillion, one hundred five billion, five hundred sixty-one million, one hundred ten thousand, sixty-one".