47438718440 has 64 divisors (see below), whose sum is σ = 110496960000. Its totient is φ = 18310590720.

The previous prime is 47438718419. The next prime is 47438718451. The reversal of 47438718440 is 4481783474.

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 15 ways as a sum of consecutive naturals, for example, 377951 + ... + 487569.

It is an arithmetic number, because the mean of its divisors is an integer number (1726515000).

Almost surely, 2^47438718440 is an apocalyptic number.

47438718440 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 47438718440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55248480000).

47438718440 is an abundant number, since it is smaller than the sum of its proper divisors (63058241560).

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

47438718440 is a wasteful number, since it uses less digits than its factorization.

47438718440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110010 (or 110006 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 50.

The spelling of 47438718440 in words is "forty-seven billion, four hundred thirty-eight million, seven hundred eighteen thousand, four hundred forty".