34404165661 has 4 divisors (see below), whose sum is σ = 34416295452. Its totient is φ = 34392035872.

The previous prime is 34404165617. The next prime is 34404165703. The reversal of 34404165661 is 16656140443.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14329526436 + 20074639225 = 119706^2 + 141685^2 .

It is a cyclic number.

It is not a de Polignac number, because 34404165661 - 2⁷ = 34404165533 is a prime.

It is a super-2 number, since 2×34404165661² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34404165461) 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, 6060640 + ... + 6066313.

It is an arithmetic number, because the mean of its divisors is an integer number (8604073863).

Almost surely, 2^34404165661 is an apocalyptic number.

It is an amenable number.

34404165661 is a deficient number, since it is larger than the sum of its proper divisors (12129791).

34404165661 is a wasteful number, since it uses less digits than its factorization.

34404165661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12129790.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 34404165661 in words is "thirty-four billion, four hundred four million, one hundred sixty-five thousand, six hundred sixty-one".