105443721000 has 128 divisors (see below), whose sum is σ = 365538326400. Its totient is φ = 28118318400.

The previous prime is 105443720969. The next prime is 105443721029. The reversal of 105443721000 is 127344501.

105443721000 is a `hidden beast` number, since 1 + 0 + 5 + 443 + 7 + 210 + 0 + 0 = 666.

It is a super-2 number, since 2×105443721000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1925662 + ... + 1979661.

It is an arithmetic number, because the mean of its divisors is an integer number (2855768175).

Almost surely, 2^105443721000 is an apocalyptic number.

105443721000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105443721000 is an abundant number, since it is smaller than the sum of its proper divisors (260094605400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105443721000 is a wasteful number, since it uses less digits than its factorization.

105443721000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905353 (or 3905333 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The spelling of 105443721000 in words is "one hundred five billion, four hundred forty-three million, seven hundred twenty-one thousand".