47694721536 has 960 divisors, whose sum is σ = 185065119360. Its totient is φ = 11983749120.

The previous prime is 47694721507. The next prime is 47694721537. The reversal of 47694721536 is 63512749674.

47694721536 is a `hidden beast` number, since 4 + 7 + 69 + 47 + 2 + 1 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (47694721537) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 275691946 + ... + 275692118.

It is an arithmetic number, because the mean of its divisors is an integer number (192776166).

Almost surely, 2^47694721536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47694721536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92532559680).

47694721536 is an abundant number, since it is smaller than the sum of its proper divisors (137370397824).

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

47694721536 is a wasteful number, since it uses less digits than its factorization.

47694721536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 233 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 47694721536 in words is "forty-seven billion, six hundred ninety-four million, seven hundred twenty-one thousand, five hundred thirty-six".