13865762840 has 32 divisors (see below), whose sum is σ = 31384795680. Its totient is φ = 5513091072.

The previous prime is 13865762821. The next prime is 13865762879. The reversal of 13865762840 is 4826756831.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031177 + ... + 1044536.

It is an arithmetic number, because the mean of its divisors is an integer number (980774865).

Almost surely, 2^13865762840 is an apocalyptic number.

13865762840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13865762840 is an abundant number, since it is smaller than the sum of its proper divisors (17519032840).

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

13865762840 is a wasteful number, since it uses less digits than its factorization.

13865762840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075891 (or 2075887 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 13865762840 in words is "thirteen billion, eight hundred sixty-five million, seven hundred sixty-two thousand, eight hundred forty".