12615259140 has 360 divisors, whose sum is σ = 43906853760. Its totient is φ = 3029685120.

The previous prime is 12615259081. The next prime is 12615259159. The reversal of 12615259140 is 4195251621.

12615259140 is a `hidden beast` number, since 1 + 2 + 6 + 1 + 525 + 91 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12615259095 and 12615259104.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 27246549 + ... + 27247011.

Almost surely, 2^12615259140 is an apocalyptic number.

12615259140 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 12615259140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21953426880).

12615259140 is an abundant number, since it is smaller than the sum of its proper divisors (31291594620).

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

12615259140 is a wasteful number, since it uses less digits than its factorization.

12615259140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 12615259140 in words is "twelve billion, six hundred fifteen million, two hundred fifty-nine thousand, one hundred forty".