3445681773709 has 4 divisors (see below), whose sum is σ = 3937922027104. Its totient is φ = 2953441520316.

The previous prime is 3445681773673. The next prime is 3445681773733. The reversal of 3445681773709 is 9073771865443.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-3445681773709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3445681773749) 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, 246120126687 + ... + 246120126700.

It is an arithmetic number, because the mean of its divisors is an integer number (984480506776).

Almost surely, 2^{3445681773709} is an apocalyptic number.

It is an amenable number.

3445681773709 is a deficient number, since it is larger than the sum of its proper divisors (492240253395).

3445681773709 is an equidigital number, since it uses as much as digits as its factorization.

3445681773709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492240253394.

The product of its (nonzero) digits is 106686720, while the sum is 64.

The spelling of 3445681773709 in words is "three trillion, four hundred forty-five billion, six hundred eighty-one million, seven hundred seventy-three thousand, seven hundred nine".