18687130233420 has 192 divisors, whose sum is σ = 60679839951360. Its totient is φ = 4249287936000.

The previous prime is 18687130233407. The next prime is 18687130233427. The reversal of 18687130233420 is 2433203178681.

It is a self number, because there is not a number n which added to its sum of digits gives 18687130233420.

It is not an unprimeable number, because it can be changed into a prime (18687130233427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6110697 + ... + 8643776.

It is an arithmetic number, because the mean of its divisors is an integer number (316040833080).

Almost surely, 2^{18687130233420} is an apocalyptic number.

18687130233420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18687130233420 is an abundant number, since it is smaller than the sum of its proper divisors (41992709717940).

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

18687130233420 is a wasteful number, since it uses less digits than its factorization.

18687130233420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14754616 (or 14754614 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 18687130233420 in words is "eighteen trillion, six hundred eighty-seven billion, one hundred thirty million, two hundred thirty-three thousand, four hundred twenty".