5278723852637 has 2 divisors, whose sum is σ = 5278723852638. Its totient is φ = 5278723852636.

The previous prime is 5278723852603. The next prime is 5278723852639. The reversal of 5278723852637 is 7362583278725.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5015355771001 + 263368081636 = 2239499^2 + 513194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5278723852637 is a prime.

Together with 5278723852639, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5278723852639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639361926318 + 2639361926319.

It is an arithmetic number, because the mean of its divisors is an integer number (2639361926319).

Almost surely, 2^{5278723852637} is an apocalyptic number.

It is an amenable number.

5278723852637 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278723852637 is an equidigital number, since it uses as much as digits as its factorization.

5278723852637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 237081600, while the sum is 65.

The spelling of 5278723852637 in words is "five trillion, two hundred seventy-eight billion, seven hundred twenty-three million, eight hundred fifty-two thousand, six hundred thirty-seven".