4787391786997 has 2 divisors, whose sum is σ = 4787391786998. Its totient is φ = 4787391786996.

The previous prime is 4787391786949. The next prime is 4787391787097. The reversal of 4787391786997 is 7996871937874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3192793611921 + 1594598175076 = 1786839^2 + 1262774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4787391786997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4787391736997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2393695893498 + 2393695893499.

It is an arithmetic number, because the mean of its divisors is an integer number (2393695893499).

Almost surely, 2^{4787391786997} is an apocalyptic number.

It is an amenable number.

4787391786997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4787391786997 is an equidigital number, since it uses as much as digits as its factorization.

4787391786997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8065516032, while the sum is 85.

The spelling of 4787391786997 in words is "four trillion, seven hundred eighty-seven billion, three hundred ninety-one million, seven hundred eighty-six thousand, nine hundred ninety-seven".