12699706905386 has 4 divisors (see below), whose sum is σ = 19049560358082. Its totient is φ = 6349853452692.

The previous prime is 12699706905383. The next prime is 12699706905467. The reversal of 12699706905386 is 68350960799621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6759641204761 + 5940065700625 = 2599931^2 + 2437225^2 .

It is a super-2 number, since 2×12699706905386² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12699706905383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3174926726345 + ... + 3174926726348.

Almost surely, 2^{12699706905386} is an apocalyptic number.

12699706905386 is a deficient number, since it is larger than the sum of its proper divisors (6349853452696).

12699706905386 is an equidigital number, since it uses as much as digits as its factorization.

12699706905386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6349853452695.

The product of its (nonzero) digits is 264539520, while the sum is 71.

The spelling of 12699706905386 in words is "twelve trillion, six hundred ninety-nine billion, seven hundred six million, nine hundred five thousand, three hundred eighty-six".