105561055478 has 8 divisors (see below), whose sum is σ = 163449376320. Its totient is φ = 51077930040.

The previous prime is 105561055477. The next prime is 105561055517. The reversal of 105561055478 is 874550165501.

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

It is a super-2 number, since 2×105561055478² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105561055477) 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, 851298773 + ... + 851298896.

It is an arithmetic number, because the mean of its divisors is an integer number (20431172040).

Almost surely, 2^105561055478 is an apocalyptic number.

105561055478 is a deficient number, since it is larger than the sum of its proper divisors (57888320842).

105561055478 is a wasteful number, since it uses less digits than its factorization.

105561055478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702597702.

The product of its (nonzero) digits is 840000, while the sum is 47.

The spelling of 105561055478 in words is "one hundred five billion, five hundred sixty-one million, fifty-five thousand, four hundred seventy-eight".