47420171823 has 32 divisors (see below), whose sum is σ = 69908520960. Its totient is φ = 28457589600.

The previous prime is 47420171803. The next prime is 47420171839. The reversal of 47420171823 is 32817102474.

It is not a de Polignac number, because 47420171823 - 2⁹ = 47420171311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47420171803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78190 + ... + 317732.

It is an arithmetic number, because the mean of its divisors is an integer number (2184641280).

Almost surely, 2^47420171823 is an apocalyptic number.

47420171823 is a deficient number, since it is larger than the sum of its proper divisors (22488349137).

47420171823 is a wasteful number, since it uses less digits than its factorization.

47420171823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239739.

The product of its (nonzero) digits is 75264, while the sum is 39.

The spelling of 47420171823 in words is "forty-seven billion, four hundred twenty million, one hundred seventy-one thousand, eight hundred twenty-three".