106704444721 has 6 divisors (see below), whose sum is σ = 124125578610. Its totient is φ = 91460952576.

The previous prime is 106704444689. The next prime is 106704444727. The reversal of 106704444721 is 127444407601.

It can be written as a sum of positive squares in only one way, i.e., 101174886400 + 5529558321 = 318080^2 + 74361^2 .

It is not a de Polignac number, because 106704444721 - 2⁵ = 106704444689 is a prime.

It is a super-2 number, since 2×106704444721² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106704444727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1088820816 + ... + 1088820913.

It is an arithmetic number, because the mean of its divisors is an integer number (20687596435).

Almost surely, 2^106704444721 is an apocalyptic number.

It is an amenable number.

106704444721 is a deficient number, since it is larger than the sum of its proper divisors (17421133889).

106704444721 is an equidigital number, since it uses as much as digits as its factorization.

106704444721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177641743 (or 2177641736 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 40.

The spelling of 106704444721 in words is "one hundred six billion, seven hundred four million, four hundred forty-four thousand, seven hundred twenty-one".