47897764146 has 72 divisors (see below), whose sum is σ = 113542761852. Its totient is φ = 14541926400.

The previous prime is 47897764133. The next prime is 47897764157. The reversal of 47897764146 is 64146779874.

47897764146 is a `hidden beast` number, since 478 + 97 + 7 + 64 + 14 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 43980381225 + 3917382921 = 209715^2 + 62589^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 212626 + ... + 375506.

Almost surely, 2^47897764146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47897764146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56771380926).

47897764146 is an abundant number, since it is smaller than the sum of its proper divisors (65644997706).

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

47897764146 is a wasteful number, since it uses less digits than its factorization.

47897764146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162968 (or 162934 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 63.

The spelling of 47897764146 in words is "forty-seven billion, eight hundred ninety-seven million, seven hundred sixty-four thousand, one hundred forty-six".