12479475136 has 56 divisors (see below), whose sum is σ = 25395448320. Its totient is φ = 6081261312.

The previous prime is 12479475131. The next prime is 12479475137. The reversal of 12479475136 is 63157497421.

It is a super-3 number, since 3×12479475136³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12479475136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12479475131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313475 + ... + 1322941.

Almost surely, 2^12479475136 is an apocalyptic number.

12479475136 is a gapful number since it is divisible by the number (16) 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 12479475136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12697724160).

12479475136 is an abundant number, since it is smaller than the sum of its proper divisors (12915973184).

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

12479475136 is an equidigital number, since it uses as much as digits as its factorization.

12479475136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001 (or 9991 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The spelling of 12479475136 in words is "twelve billion, four hundred seventy-nine million, four hundred seventy-five thousand, one hundred thirty-six".