47450009831 has 4 divisors (see below), whose sum is σ = 54228582672. Its totient is φ = 40671436992.

The previous prime is 47450009813. The next prime is 47450009837. The reversal of 47450009831 is 13890005474.

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 47450009831 - 2¹⁴ = 47449993447 is a prime.

It is a super-2 number, since 2×47450009831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47450009837) 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 3 ways as a sum of consecutive naturals, for example, 3389286410 + ... + 3389286423.

It is an arithmetic number, because the mean of its divisors is an integer number (13557145668).

Almost surely, 2^47450009831 is an apocalyptic number.

47450009831 is a deficient number, since it is larger than the sum of its proper divisors (6778572841).

47450009831 is an equidigital number, since it uses as much as digits as its factorization.

47450009831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778572840.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 47450009831 in words is "forty-seven billion, four hundred fifty million, nine thousand, eight hundred thirty-one".