12512786385 has 64 divisors (see below), whose sum is σ = 22119837696. Its totient is φ = 5989728000.

The previous prime is 12512786383. The next prime is 12512786387. The reversal of 12512786385 is 58368721521.

It is an interprime number because it is at equal distance from previous prime (12512786383) and next prime (12512786387).

It is not a de Polignac number, because 12512786385 - 2¹ = 12512786383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12512786381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4308844 + ... + 4311746.

It is an arithmetic number, because the mean of its divisors is an integer number (345622464).

Almost surely, 2^12512786385 is an apocalyptic number.

12512786385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12512786385 is a deficient number, since it is larger than the sum of its proper divisors (9607051311).

12512786385 is a wasteful number, since it uses less digits than its factorization.

12512786385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246.

The product of its digits is 806400, while the sum is 48.

It can be divided in two parts, 12512 and 786385, that added together give a palindrome (798897).

The spelling of 12512786385 in words is "twelve billion, five hundred twelve million, seven hundred eighty-six thousand, three hundred eighty-five".