12699890810 has 16 divisors (see below), whose sum is σ = 22944789000. Its totient is φ = 5061070656.

The previous prime is 12699890759. The next prime is 12699890813. The reversal of 12699890810 is 1809899621.

It can be written as a sum of positive squares in 4 ways, for example, as 9127318369 + 3572572441 = 95537^2 + 59771^2 .

It is a super-2 number, since 2×12699890810² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12699890813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2357885 + ... + 2363264.

Almost surely, 2^12699890810 is an apocalyptic number.

12699890810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12699890810 is a deficient number, since it is larger than the sum of its proper divisors (10244898190).

12699890810 is a wasteful number, since it uses less digits than its factorization.

12699890810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721425.

The product of its (nonzero) digits is 559872, while the sum is 53.

The spelling of 12699890810 in words is "twelve billion, six hundred ninety-nine million, eight hundred ninety thousand, eight hundred ten".