105721706070 has 24 divisors (see below), whose sum is σ = 274876436016. Its totient is φ = 28192454928.

The previous prime is 105721706021. The next prime is 105721706071. The reversal of 105721706070 is 70607127501.

105721706070 is a `hidden beast` number, since 1 + 0 + 572 + 17 + 0 + 6 + 0 + 70 = 666.

It is a super-2 number, since 2×105721706070² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105721706071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 587342722 + ... + 587342901.

It is an arithmetic number, because the mean of its divisors is an integer number (11453184834).

Almost surely, 2^105721706070 is an apocalyptic number.

105721706070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105721706070 is an abundant number, since it is smaller than the sum of its proper divisors (169154729946).

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

105721706070 is a wasteful number, since it uses less digits than its factorization.

105721706070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174685636 (or 1174685633 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The spelling of 105721706070 in words is "one hundred five billion, seven hundred twenty-one million, seven hundred six thousand, seventy".