12722541708551 has 4 divisors (see below), whose sum is σ = 12737283936192. Its totient is φ = 12707799480912.

The previous prime is 12722541708529. The next prime is 12722541708563. The reversal of 12722541708551 is 15580714522721.

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

It is a cyclic number.

It is not a de Polignac number, because 12722541708551 - 2¹⁰ = 12722541707527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12722541708551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722541708581) 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, 7371112526 + ... + 7371114251.

It is an arithmetic number, because the mean of its divisors is an integer number (3184320984048).

Almost surely, 2^{12722541708551} is an apocalyptic number.

12722541708551 is a deficient number, since it is larger than the sum of its proper divisors (14742227641).

12722541708551 is an equidigital number, since it uses as much as digits as its factorization.

12722541708551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14742227640.

The product of its (nonzero) digits is 1568000, while the sum is 50.

The spelling of 12722541708551 in words is "twelve trillion, seven hundred twenty-two billion, five hundred forty-one million, seven hundred eight thousand, five hundred fifty-one".