12749338530 has 96 divisors (see below), whose sum is σ = 35213802624. Its totient is φ = 3189293568.

The previous prime is 12749338517. The next prime is 12749338573. The reversal of 12749338530 is 3583394721.

12749338530 is a `hidden beast` number, since 1 + 27 + 4 + 93 + 3 + 8 + 530 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 456139 + ... + 483281.

It is an arithmetic number, because the mean of its divisors is an integer number (366810444).

Almost surely, 2^12749338530 is an apocalyptic number.

12749338530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12749338530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17606901312).

12749338530 is an abundant number, since it is smaller than the sum of its proper divisors (22464464094).

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

12749338530 is a wasteful number, since it uses less digits than its factorization.

12749338530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27480 (or 27477 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 12749338530 in words is "twelve billion, seven hundred forty-nine million, three hundred thirty-eight thousand, five hundred thirty".