47221751808 has 360 divisors, whose sum is σ = 170115778560. Its totient is φ = 12262440960.

The previous prime is 47221751803. The next prime is 47221751813. The reversal of 47221751808 is 80815712274.

47221751808 is a `hidden beast` number, since 472 + 2 + 175 + 1 + 8 + 0 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (47221751803) and next prime (47221751813).

It is not an unprimeable number, because it can be changed into a prime (47221751803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11352033 + ... + 11356191.

Almost surely, 2^47221751808 is an apocalyptic number.

47221751808 is a gapful number since it is divisible by the number (48) 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 47221751808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85057889280).

47221751808 is an abundant number, since it is smaller than the sum of its proper divisors (122894026752).

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

47221751808 is a wasteful number, since it uses less digits than its factorization.

47221751808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4211 (or 4182 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 47221751808 in words is "forty-seven billion, two hundred twenty-one million, seven hundred fifty-one thousand, eight hundred eight".