12722602605637 has 4 divisors (see below), whose sum is σ = 12883648208320. Its totient is φ = 12561557002956.

The previous prime is 12722602605631. The next prime is 12722602605653. The reversal of 12722602605637 is 73650620622721.

12722602605637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12722602605637 - 2¹¹ = 12722602603589 is a prime.

It is a super-2 number, since 2×12722602605637² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722602605631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80522801223 + ... + 80522801380.

It is an arithmetic number, because the mean of its divisors is an integer number (3220912052080).

Almost surely, 2^{12722602605637} is an apocalyptic number.

It is an amenable number.

12722602605637 is a deficient number, since it is larger than the sum of its proper divisors (161045602683).

12722602605637 is an equidigital number, since it uses as much as digits as its factorization.

12722602605637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161045602682.

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

The spelling of 12722602605637 in words is "twelve trillion, seven hundred twenty-two billion, six hundred two million, six hundred five thousand, six hundred thirty-seven".