20837262503713 has 2 divisors, whose sum is σ = 20837262503714. Its totient is φ = 20837262503712.

The previous prime is 20837262503711. The next prime is 20837262503731. The reversal of 20837262503713 is 31730526273802.

It is a happy number.

Together with next prime (20837262503731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16882048435729 + 3955214067984 = 4108777^2 + 1988772^2 .

It is a cyclic number.

It is not a de Polignac number, because 20837262503713 - 2¹ = 20837262503711 is a prime.

It is a super-2 number, since 2×20837262503713² (a number of 27 digits) contains 22 as substring.

Together with 20837262503711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20837262503711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10418631251856 + 10418631251857.

It is an arithmetic number, because the mean of its divisors is an integer number (10418631251857).

Almost surely, 2^{20837262503713} is an apocalyptic number.

It is an amenable number.

20837262503713 is a deficient number, since it is larger than the sum of its proper divisors (1).

20837262503713 is an equidigital number, since it uses as much as digits as its factorization.

20837262503713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 20837262503713 in words is "twenty trillion, eight hundred thirty-seven billion, two hundred sixty-two million, five hundred three thousand, seven hundred thirteen".