105556724255 has 4 divisors (see below), whose sum is σ = 126668069112. Its totient is φ = 84445379400.

The previous prime is 105556724233. The next prime is 105556724257. The reversal of 105556724255 is 552427655501.

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

It is not a de Polignac number, because 105556724255 - 2⁶ = 105556724191 is a prime.

It is a super-2 number, since 2×105556724255² (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 (105556724257) 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, 10555672421 + ... + 10555672430.

It is an arithmetic number, because the mean of its divisors is an integer number (31667017278).

Almost surely, 2^105556724255 is an apocalyptic number.

105556724255 is a deficient number, since it is larger than the sum of its proper divisors (21111344857).

105556724255 is an equidigital number, since it uses as much as digits as its factorization.

105556724255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21111344856.

The product of its (nonzero) digits is 2100000, while the sum is 47.

The spelling of 105556724255 in words is "one hundred five billion, five hundred fifty-six million, seven hundred twenty-four thousand, two hundred fifty-five".