12254779632 has 120 divisors (see below), whose sum is σ = 33844061520. Its totient is φ = 3816422400.

The previous prime is 12254779567. The next prime is 12254779633. The reversal of 12254779632 is 23697745221.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12254779633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1333132 + ... + 1342292.

It is an arithmetic number, because the mean of its divisors is an integer number (282033846).

Almost surely, 2^12254779632 is an apocalyptic number.

12254779632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12254779632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16922030760).

12254779632 is an abundant number, since it is smaller than the sum of its proper divisors (21589281888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12254779632 is a wasteful number, since it uses less digits than its factorization.

12254779632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263 (or 9226 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The spelling of 12254779632 in words is "twelve billion, two hundred fifty-four million, seven hundred seventy-nine thousand, six hundred thirty-two".