13885820840 has 32 divisors (see below), whose sum is σ = 31349755080. Its totient is φ = 5535366912.

The previous prime is 13885820833. The next prime is 13885820857. The reversal of 13885820840 is 4802858831.

It can be written as a sum of positive squares in 4 ways, for example, as 10391355844 + 3494464996 = 101938^2 + 59114^2 .

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, 580679 + ... + 604118.

Almost surely, 2^13885820840 is an apocalyptic number.

13885820840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13885820840 is an abundant number, since it is smaller than the sum of its proper divisors (17463934240).

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

13885820840 is a wasteful number, since it uses less digits than its factorization.

13885820840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185101 (or 1185097 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 47.

The spelling of 13885820840 in words is "thirteen billion, eight hundred eighty-five million, eight hundred twenty thousand, eight hundred forty".