4787391786913 has 2 divisors, whose sum is σ = 4787391786914. Its totient is φ = 4787391786912.

The previous prime is 4787391786889. The next prime is 4787391786949. The reversal of 4787391786913 is 3196871937874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4578842471329 + 208549315584 = 2139823^2 + 456672^2 .

It is a cyclic number.

It is not a de Polignac number, because 4787391786913 - 2¹³ = 4787391778721 is a prime.

It is not a weakly prime, because it can be changed into another prime (4787391886913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2393695893456 + 2393695893457.

It is an arithmetic number, because the mean of its divisors is an integer number (2393695893457).

Almost surely, 2^{4787391786913} is an apocalyptic number.

It is an amenable number.

4787391786913 is a deficient number, since it is larger than the sum of its proper divisors (1).

4787391786913 is an equidigital number, since it uses as much as digits as its factorization.

4787391786913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384072192, while the sum is 73.

The spelling of 4787391786913 in words is "four trillion, seven hundred eighty-seven billion, three hundred ninety-one million, seven hundred eighty-six thousand, nine hundred thirteen".