12644827701 has 16 divisors (see below), whose sum is σ = 18397590528. Its totient is φ = 7661401200.

The previous prime is 12644827673. The next prime is 12644827703. The reversal of 12644827701 is 10772844621.

It is not a de Polignac number, because 12644827701 - 2⁵ = 12644827669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644827703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71586 + ... + 174396.

It is an arithmetic number, because the mean of its divisors is an integer number (1149849408).

Almost surely, 2^12644827701 is an apocalyptic number.

12644827701 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12644827701 is a deficient number, since it is larger than the sum of its proper divisors (5752762827).

12644827701 is a wasteful number, since it uses less digits than its factorization.

12644827701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106552.

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 12644827701 in words is "twelve billion, six hundred forty-four million, eight hundred twenty-seven thousand, seven hundred one".