12237249638 has 16 divisors (see below), whose sum is σ = 19439752464. Its totient is φ = 5757484800.

The previous prime is 12237249637. The next prime is 12237249653. The reversal of 12237249638 is 83694273221.

It is a super-2 number, since 2×12237249638² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12237249592 and 12237249601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12237249637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136106 + ... + 207362.

It is an arithmetic number, because the mean of its divisors is an integer number (1214984529).

Almost surely, 2^12237249638 is an apocalyptic number.

12237249638 is a deficient number, since it is larger than the sum of its proper divisors (7202502826).

12237249638 is a wasteful number, since it uses less digits than its factorization.

12237249638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76327.

The product of its digits is 870912, while the sum is 47.

The spelling of 12237249638 in words is "twelve billion, two hundred thirty-seven million, two hundred forty-nine thousand, six hundred thirty-eight".