13387081474820 has 24 divisors (see below), whose sum is σ = 28121748044544. Its totient is φ = 5353141742816.

The previous prime is 13387081474817. The next prime is 13387081474843. The reversal of 13387081474820 is 2847418078331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105613022 + ... + 105739701.

It is an arithmetic number, because the mean of its divisors is an integer number (1171739501856).

Almost surely, 2^{13387081474820} is an apocalyptic number.

13387081474820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13387081474820 is an abundant number, since it is smaller than the sum of its proper divisors (14734666569724).

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

13387081474820 is a wasteful number, since it uses less digits than its factorization.

13387081474820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211355899 (or 211355897 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 13387081474820 in words is "thirteen trillion, three hundred eighty-seven billion, eighty-one million, four hundred seventy-four thousand, eight hundred twenty".