47746557128 has 8 divisors (see below), whose sum is σ = 89524794630. Its totient is φ = 23873278560.

The previous prime is 47746557109. The next prime is 47746557139. The reversal of 47746557128 is 82175564774.

47746557128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47453394244 + 293162884 = 217838^2 + 17122^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2984159813 + ... + 2984159828.

Almost surely, 2^47746557128 is an apocalyptic number.

It is an amenable number.

47746557128 is a deficient number, since it is larger than the sum of its proper divisors (41778237502).

47746557128 is a wasteful number, since it uses less digits than its factorization.

47746557128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5968319647 (or 5968319643 counting only the distinct ones).

The product of its digits is 13171200, while the sum is 56.

The spelling of 47746557128 in words is "forty-seven billion, seven hundred forty-six million, five hundred fifty-seven thousand, one hundred twenty-eight".