12637637500765 has 4 divisors (see below), whose sum is σ = 15165165000924. Its totient is φ = 10110110000608.

The previous prime is 12637637500651. The next prime is 12637637500771. The reversal of 12637637500765 is 56700573673621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9366176697241 + 3271460803524 = 3060421^2 + 1808718^2 .

It is a cyclic number.

It is not a de Polignac number, because 12637637500765 - 2¹³ = 12637637492573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263763750072 + ... + 1263763750081.

It is an arithmetic number, because the mean of its divisors is an integer number (3791291250231).

Almost surely, 2^{12637637500765} is an apocalyptic number.

It is an amenable number.

12637637500765 is a deficient number, since it is larger than the sum of its proper divisors (2527527500159).

12637637500765 is an equidigital number, since it uses as much as digits as its factorization.

12637637500765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527527500158.

The product of its (nonzero) digits is 33339600, while the sum is 58.

The spelling of 12637637500765 in words is "twelve trillion, six hundred thirty-seven billion, six hundred thirty-seven million, five hundred thousand, seven hundred sixty-five".