13206888820 has 12 divisors (see below), whose sum is σ = 27734466564. Its totient is φ = 5282755520.

The previous prime is 13206888757. The next prime is 13206888833. The reversal of 13206888820 is 2888860231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10464062436 + 2742826384 = 102294^2 + 52372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330172201 + ... + 330172240.

It is an arithmetic number, because the mean of its divisors is an integer number (2311205547).

Almost surely, 2^13206888820 is an apocalyptic number.

13206888820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13206888820 is an abundant number, since it is smaller than the sum of its proper divisors (14527577744).

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

13206888820 is a wasteful number, since it uses less digits than its factorization.

13206888820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660344450 (or 660344448 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 46.

The spelling of 13206888820 in words is "thirteen billion, two hundred six million, eight hundred eighty-eight thousand, eight hundred twenty".