13356775820 has 24 divisors (see below), whose sum is σ = 28733358528. Its totient is φ = 5212400000.

The previous prime is 13356775787. The next prime is 13356775823. The reversal of 13356775820 is 2857765331.

It is not an unprimeable number, because it can be changed into a prime (13356775823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8143556 + ... + 8145195.

It is an arithmetic number, because the mean of its divisors is an integer number (1197223272).

Almost surely, 2^13356775820 is an apocalyptic number.

13356775820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13356775820 is an abundant number, since it is smaller than the sum of its proper divisors (15376582708).

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

13356775820 is a wasteful number, since it uses less digits than its factorization.

13356775820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16288801 (or 16288799 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 13356775820 in words is "thirteen billion, three hundred fifty-six million, seven hundred seventy-five thousand, eight hundred twenty".