47243427840 has 768 divisors, whose sum is σ = 196290432000. Its totient is φ = 10277093376.

The previous prime is 47243427799. The next prime is 47243427887. The reversal of 47243427840 is 4872434274.

It is a tau number, because it is divible by the number of its divisors (768).

It is a super-3 number, since 3×47243427840³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 237404061 + ... + 237404259.

It is an arithmetic number, because the mean of its divisors is an integer number (255586500).

Almost surely, 2^47243427840 is an apocalyptic number.

47243427840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47243427840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98145216000).

47243427840 is an abundant number, since it is smaller than the sum of its proper divisors (149047004160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47243427840 is a wasteful number, since it uses less digits than its factorization.

47243427840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 45.

The spelling of 47243427840 in words is "forty-seven billion, two hundred forty-three million, four hundred twenty-seven thousand, eight hundred forty".