105556801261 has 4 divisors (see below), whose sum is σ = 111112422400. Its totient is φ = 100001180124.

The previous prime is 105556801237. The next prime is 105556801297. The reversal of 105556801261 is 162108655501.

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 105556801261 - 2³³ = 96966866669 is a prime.

It is a super-2 number, since 2×105556801261² (a number of 23 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 (105556801201) 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, 2777810541 + ... + 2777810578.

It is an arithmetic number, because the mean of its divisors is an integer number (27778105600).

Almost surely, 2^105556801261 is an apocalyptic number.

It is an amenable number.

105556801261 is a deficient number, since it is larger than the sum of its proper divisors (5555621139).

105556801261 is an equidigital number, since it uses as much as digits as its factorization.

105556801261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555621138.

The product of its (nonzero) digits is 72000, while the sum is 40.

The spelling of 105556801261 in words is "one hundred five billion, five hundred fifty-six million, eight hundred one thousand, two hundred sixty-one".