47721343173423 has 4 divisors (see below), whose sum is σ = 63628457564568. Its totient is φ = 31814228782280.

The previous prime is 47721343173403. The next prime is 47721343173437. The reversal of 47721343173423 is 32437134312774.

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 47721343173423 - 2²⁸ = 47721074737967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47721343173403) 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, 7953557195568 + ... + 7953557195573.

It is an arithmetic number, because the mean of its divisors is an integer number (15907114391142).

Almost surely, 2^{47721343173423} is an apocalyptic number.

47721343173423 is a deficient number, since it is larger than the sum of its proper divisors (15907114391145).

47721343173423 is a wasteful number, since it uses less digits than its factorization.

47721343173423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15907114391144.

The product of its digits is 7112448, while the sum is 51.

The spelling of 47721343173423 in words is "forty-seven trillion, seven hundred twenty-one billion, three hundred forty-three million, one hundred seventy-three thousand, four hundred twenty-three".