12640785339 has 192 divisors, whose sum is σ = 22978314240. Its totient is φ = 6113802240.

The previous prime is 12640785337. The next prime is 12640785347. The reversal of 12640785339 is 93358704621.

It is not a de Polignac number, because 12640785339 - 2¹ = 12640785337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12640785337) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 160009902 + ... + 160009980.

It is an arithmetic number, because the mean of its divisors is an integer number (119678720).

It is a 1-persistent number, because it is pandigital, but 2⋅12640785339 = 25281570678 is not.

Almost surely, 2^12640785339 is an apocalyptic number.

12640785339 is a deficient number, since it is larger than the sum of its proper divisors (10337528901).

12640785339 is a wasteful number, since it uses less digits than its factorization.

12640785339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 12640785339 in words is "twelve billion, six hundred forty million, seven hundred eighty-five thousand, three hundred thirty-nine".