5156566807673 has 4 divisors (see below), whose sum is σ = 5241100689828. Its totient is φ = 5072032925520.

The previous prime is 5156566807661. The next prime is 5156566807729. The reversal of 5156566807673 is 3767086656515.

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 494754678544 + 4661812129129 = 703388^2 + 2159123^2 .

It is a cyclic number.

It is not a de Polignac number, because 5156566807673 - 2⁴ = 5156566807657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5156566807633) 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, 42266940986 + ... + 42266941107.

It is an arithmetic number, because the mean of its divisors is an integer number (1310275172457).

Almost surely, 2^{5156566807673} is an apocalyptic number.

It is an amenable number.

5156566807673 is a deficient number, since it is larger than the sum of its proper divisors (84533882155).

5156566807673 is an equidigital number, since it uses as much as digits as its factorization.

5156566807673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84533882154.

The product of its (nonzero) digits is 190512000, while the sum is 65.

The spelling of 5156566807673 in words is "five trillion, one hundred fifty-six billion, five hundred sixty-six million, eight hundred seven thousand, six hundred seventy-three".