18703485531020 has 96 divisors (see below), whose sum is σ = 40177466284032. Its totient is φ = 7310457843968.

The previous prime is 18703485530981. The next prime is 18703485531037. The reversal of 18703485531020 is 2013558430781.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2365429907 + ... + 2365437813.

It is an arithmetic number, because the mean of its divisors is an integer number (418515273792).

Almost surely, 2^{18703485531020} is an apocalyptic number.

18703485531020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18703485531020 is an abundant number, since it is smaller than the sum of its proper divisors (21473980753012).

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

18703485531020 is a wasteful number, since it uses less digits than its factorization.

18703485531020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11687 (or 11685 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 18703485531020 in words is "eighteen trillion, seven hundred three billion, four hundred eighty-five million, five hundred thirty-one thousand, twenty".