47781756792 has 672 divisors, whose sum is σ = 178978312800. Its totient is φ = 11660267520.

The previous prime is 47781756779. The next prime is 47781756797. The reversal of 47781756792 is 29765718774.

47781756792 is a `hidden beast` number, since 477 + 8 + 1 + 75 + 6 + 7 + 92 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47781756797) by changing a digit.

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 167 ways as a sum of consecutive naturals, for example, 83974684 + ... + 83975252.

It is an arithmetic number, because the mean of its divisors is an integer number (266336775).

Almost surely, 2^47781756792 is an apocalyptic number.

47781756792 is a gapful number since it is divisible by the number (42) 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 47781756792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89489156400).

47781756792 is an abundant number, since it is smaller than the sum of its proper divisors (131196556008).

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

47781756792 is a wasteful number, since it uses less digits than its factorization.

47781756792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 609 counting only the distinct ones).

The product of its digits is 41489280, while the sum is 63.

The spelling of 47781756792 in words is "forty-seven billion, seven hundred eighty-one million, seven hundred fifty-six thousand, seven hundred ninety-two".