13687833420 has 36 divisors (see below), whose sum is σ = 41519761920. Its totient is φ = 3650088864.

The previous prime is 13687833413. The next prime is 13687833421. The reversal of 13687833420 is 2433878631.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (13687833421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38021580 + ... + 38021939.

It is an arithmetic number, because the mean of its divisors is an integer number (1153326720).

Almost surely, 2^13687833420 is an apocalyptic number.

13687833420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13687833420 is an abundant number, since it is smaller than the sum of its proper divisors (27831928500).

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

13687833420 is a wasteful number, since it uses less digits than its factorization.

13687833420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76043534 (or 76043529 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 13687833420 in words is "thirteen billion, six hundred eighty-seven million, eight hundred thirty-three thousand, four hundred twenty".