47215837723 has 4 divisors (see below), whose sum is σ = 49993239960. Its totient is φ = 44438435488.

The previous prime is 47215837667. The next prime is 47215837819. The reversal of 47215837723 is 32773851274.

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

It is a cyclic number.

It is not a de Polignac number, because 47215837723 - 2²¹ = 47213740571 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47215832723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388701093 + ... + 1388701126.

It is an arithmetic number, because the mean of its divisors is an integer number (12498309990).

Almost surely, 2^47215837723 is an apocalyptic number.

47215837723 is a deficient number, since it is larger than the sum of its proper divisors (2777402237).

47215837723 is a wasteful number, since it uses less digits than its factorization.

47215837723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777402236.

The product of its digits is 1975680, while the sum is 49.

The spelling of 47215837723 in words is "forty-seven billion, two hundred fifteen million, eight hundred thirty-seven thousand, seven hundred twenty-three".