47851597440 has 192 divisors, whose sum is σ = 166164242400. Its totient is φ = 12688865280.

The previous prime is 47851597411. The next prime is 47851597477. The reversal of 47851597440 is 4479515874.

47851597440 is a `hidden beast` number, since 4 + 7 + 8 + 5 + 1 + 597 + 4 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1007835 + ... + 1054245.

Almost surely, 2^47851597440 is an apocalyptic number.

47851597440 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 47851597440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83082121200).

47851597440 is an abundant number, since it is smaller than the sum of its proper divisors (118312644960).

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

47851597440 is a wasteful number, since it uses less digits than its factorization.

47851597440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46615 (or 46600 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 47851597440 in words is "forty-seven billion, eight hundred fifty-one million, five hundred ninety-seven thousand, four hundred forty".