12712636838 has 16 divisors (see below), whose sum is σ = 20807678736. Its totient is φ = 5777031840.

The previous prime is 12712636759. The next prime is 12712636861. The reversal of 12712636838 is 83863621721.

It is a super-2 number, since 2×12712636838² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12712636792 and 12712636801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21020 + ... + 160832.

It is an arithmetic number, because the mean of its divisors is an integer number (1300479921).

Almost surely, 2^12712636838 is an apocalyptic number.

12712636838 is a deficient number, since it is larger than the sum of its proper divisors (8095041898).

12712636838 is a wasteful number, since it uses less digits than its factorization.

12712636838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143959.

The product of its digits is 580608, while the sum is 47.

The spelling of 12712636838 in words is "twelve billion, seven hundred twelve million, six hundred thirty-six thousand, eight hundred thirty-eight".