5661996073 has 4 divisors (see below), whose sum is σ = 5694724548. Its totient is φ = 5629267600.

The previous prime is 5661996017. The next prime is 5661996079. The reversal of 5661996073 is 3706991665.

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 3737243689 + 1924752384 = 61133^2 + 43872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5661996073 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 5661996073.

It is not an unprimeable number, because it can be changed into a prime (5661996079) 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, 16363978 + ... + 16364323.

It is an arithmetic number, because the mean of its divisors is an integer number (1423681137).

Almost surely, 2^5661996073 is an apocalyptic number.

It is an amenable number.

5661996073 is a deficient number, since it is larger than the sum of its proper divisors (32728475).

5661996073 is a wasteful number, since it uses less digits than its factorization.

5661996073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32728474.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 5661996073 is about 75246.2362713246. The cubic root of 5661996073 is about 1782.3371304339.

The spelling of 5661996073 in words is "five billion, six hundred sixty-one million, nine hundred ninety-six thousand, seventy-three".