12506437695 has 16 divisors (see below), whose sum is σ = 20090028672. Its totient is φ = 6643524000.

The previous prime is 12506437681. The next prime is 12506437733. The reversal of 12506437695 is 59673460521.

It is a de Polignac number, because none of the positive numbers 2^k-12506437695 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657117 + ... + 1664646.

It is an arithmetic number, because the mean of its divisors is an integer number (1255626792).

Almost surely, 2^12506437695 is an apocalyptic number.

12506437695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12506437695 is a deficient number, since it is larger than the sum of its proper divisors (7583590977).

12506437695 is a wasteful number, since it uses less digits than its factorization.

12506437695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322022.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 12506437695 in words is "twelve billion, five hundred six million, four hundred thirty-seven thousand, six hundred ninety-five".