12529078380 has 480 divisors, whose sum is σ = 49703423616. Its totient is φ = 2570932224.

The previous prime is 12529078339. The next prime is 12529078409. The reversal of 12529078380 is 8387092521.

It is a happy number.

It is a super-3 number, since 3×12529078380³ (a number of 31 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5453392 + ... + 5455688.

Almost surely, 2^12529078380 is an apocalyptic number.

12529078380 is a gapful number since it is divisible by the number (10) 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 12529078380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24851711808).

12529078380 is an abundant number, since it is smaller than the sum of its proper divisors (37174345236).

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

12529078380 is a wasteful number, since it uses less digits than its factorization.

12529078380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 12529078380 in words is "twelve billion, five hundred twenty-nine million, seventy-eight thousand, three hundred eighty".