12512680740 has 240 divisors, whose sum is σ = 45495039744. Its totient is φ = 2819577600.

The previous prime is 12512680729. The next prime is 12512680759. The reversal of 12512680740 is 4708621521.

12512680740 is a `hidden beast` number, since 12 + 512 + 68 + 0 + 74 + 0 = 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 = 12512680695 and 12512680704.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 797370 + ... + 812910.

Almost surely, 2^12512680740 is an apocalyptic number.

12512680740 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 12512680740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22747519872).

12512680740 is an abundant number, since it is smaller than the sum of its proper divisors (32982359004).

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

12512680740 is a wasteful number, since it uses less digits than its factorization.

12512680740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15640 (or 15629 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 12512680740 in words is "twelve billion, five hundred twelve million, six hundred eighty thousand, seven hundred forty".