105550223545 has 8 divisors (see below), whose sum is σ = 136403365896. Its totient is φ = 77944780416.

The previous prime is 105550223477. The next prime is 105550223573. The reversal of 105550223545 is 545322055501.

It can be written as a sum of positive squares in 4 ways, for example, as 20190420649 + 85359802896 = 142093^2 + 292164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105550223545 is a prime.

It is a super-2 number, since 2×105550223545² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811924732 + ... + 811924861.

It is an arithmetic number, because the mean of its divisors is an integer number (17050420737).

Almost surely, 2^105550223545 is an apocalyptic number.

It is an amenable number.

105550223545 is a deficient number, since it is larger than the sum of its proper divisors (30853142351).

105550223545 is a wasteful number, since it uses less digits than its factorization.

105550223545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623849611.

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 105550223545 in words is "one hundred five billion, five hundred fifty million, two hundred twenty-three thousand, five hundred forty-five".