105856449550 has 48 divisors (see below), whose sum is σ = 199694718720. Its totient is φ = 41740669440.

The previous prime is 105856449467. The next prime is 105856449563. The reversal of 105856449550 is 55944658501.

It is a super-2 number, since 2×105856449550² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8165874 + ... + 8178826.

It is an arithmetic number, because the mean of its divisors is an integer number (4160306640).

Almost surely, 2^105856449550 is an apocalyptic number.

105856449550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105856449550 is a deficient number, since it is larger than the sum of its proper divisors (93838269170).

105856449550 is a wasteful number, since it uses less digits than its factorization.

105856449550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15277 (or 15272 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 52.

The spelling of 105856449550 in words is "one hundred five billion, eight hundred fifty-six million, four hundred forty-nine thousand, five hundred fifty".