12701636537 has 2 divisors, whose sum is σ = 12701636538. Its totient is φ = 12701636536.

The previous prime is 12701636527. The next prime is 12701636573. The reversal of 12701636537 is 73563610721.

It is a happy number.

Together with next prime (12701636573) 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., 11659896361 + 1041740176 = 107981^2 + 32276^2 .

It is a cyclic number.

It is not a de Polignac number, because 12701636537 - 2¹⁴ = 12701620153 is a prime.

It is a super-2 number, since 2×12701636537² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12701636494 and 12701636503.

It is not a weakly prime, because it can be changed into another prime (12701636527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6350818268 + 6350818269.

It is an arithmetic number, because the mean of its divisors is an integer number (6350818269).

Almost surely, 2^12701636537 is an apocalyptic number.

It is an amenable number.

12701636537 is a deficient number, since it is larger than the sum of its proper divisors (1).

12701636537 is an equidigital number, since it uses as much as digits as its factorization.

12701636537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 12701636537 in words is "twelve billion, seven hundred one million, six hundred thirty-six thousand, five hundred thirty-seven".