47919836836 has 9 divisors (see below), whose sum is σ = 83860480641. Its totient is φ = 23959699512.

The previous prime is 47919836801. The next prime is 47919836857. The reversal of 47919836836 is 63863891974.

It is a happy number.

The square root of 47919836836 is 218906.

It is a perfect power (a square), and thus also a powerful number.

47919836836 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., 9838656100 + 38081180736 = 99190^2 + 195144^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 383086 + ... + 492538.

Almost surely, 2^47919836836 is an apocalyptic number.

47919836836 is the 218906-th square number.

It is an amenable number.

47919836836 is a deficient number, since it is larger than the sum of its proper divisors (35940643805).

47919836836 is an frugal number, since it uses more digits than its factorization.

47919836836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218910 (or 109455 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 64.

Multiplying 47919836836 by its sum of digits (64), we get a square (3066869557504 = 1751248²).

The spelling of 47919836836 in words is "forty-seven billion, nine hundred nineteen million, eight hundred thirty-six thousand, eight hundred thirty-six".