47477774444747 has 4 divisors (see below), whose sum is σ = 47497748268936. Its totient is φ = 47457800620560.

The previous prime is 47477774444741. The next prime is 47477774444827. The reversal of 47477774444747 is 74744447777474.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47477774444747 - 2¹⁴ = 47477774428363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47477774444741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9986908529 + ... + 9986913282.

It is an arithmetic number, because the mean of its divisors is an integer number (11874437067234).

Almost surely, 2^{47477774444747} is an apocalyptic number.

47477774444747 is a deficient number, since it is larger than the sum of its proper divisors (19973824189).

47477774444747 is a wasteful number, since it uses less digits than its factorization.

47477774444747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19973824188.

The product of its digits is 13492928512, while the sum is 77.

Adding to 47477774444747 its reverse (74744447777474), we get a palindrome (122222222222221).

The spelling of 47477774444747 in words is "forty-seven trillion, four hundred seventy-seven billion, seven hundred seventy-four million, four hundred forty-four thousand, seven hundred forty-seven".