6161320443 has 4 divisors (see below), whose sum is σ = 8215093928. Its totient is φ = 4107546960.

The previous prime is 6161320441. The next prime is 6161320447. The reversal of 6161320443 is 3440231616.

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

It is not a de Polignac number, because 6161320443 - 2¹ = 6161320441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6161320443.

It is not an unprimeable number, because it can be changed into a prime (6161320441) 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, 1026886738 + ... + 1026886743.

It is an arithmetic number, because the mean of its divisors is an integer number (2053773482).

Almost surely, 2^6161320443 is an apocalyptic number.

6161320443 is a deficient number, since it is larger than the sum of its proper divisors (2053773485).

6161320443 is a wasteful number, since it uses less digits than its factorization.

6161320443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053773484.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 6161320443 is about 78494.0790314785. The cubic root of 6161320443 is about 1833.2622634011.

The spelling of 6161320443 in words is "six billion, one hundred sixty-one million, three hundred twenty thousand, four hundred forty-three".