47194140840 has 1024 divisors, whose sum is σ = 192810516480. Its totient is φ = 8957952000.

The previous prime is 47194140823. The next prime is 47194140853. The reversal of 47194140840 is 4804149174.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 47194140792 and 47194140801.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 646495044 + ... + 646495116.

It is an arithmetic number, because the mean of its divisors is an integer number (188291520).

Almost surely, 2^47194140840 is an apocalyptic number.

47194140840 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 47194140840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96405258240).

47194140840 is an abundant number, since it is smaller than the sum of its proper divisors (145616375640).

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

47194140840 is a wasteful number, since it uses less digits than its factorization.

47194140840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 47194140840 in words is "forty-seven billion, one hundred ninety-four million, one hundred forty thousand, eight hundred forty".