12669629820 has 48 divisors (see below), whose sum is σ = 35559699840. Its totient is φ = 3370497856.

The previous prime is 12669629813. The next prime is 12669629821. The reversal of 12669629820 is 2892696621.

It is a super-3 number, since 3×12669629820³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12669629821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226842 + ... + 277121.

It is an arithmetic number, because the mean of its divisors is an integer number (740827080).

Almost surely, 2^12669629820 is an apocalyptic number.

12669629820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12669629820 is an abundant number, since it is smaller than the sum of its proper divisors (22890070020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12669629820 is a wasteful number, since it uses less digits than its factorization.

12669629820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504394 (or 504392 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 12669629820 in words is "twelve billion, six hundred sixty-nine million, six hundred twenty-nine thousand, eight hundred twenty".