18702216718850 has 24 divisors (see below), whose sum is σ = 39755569254528. Its totient is φ = 6412188589200.

The previous prime is 18702216718837. The next prime is 18702216718853. The reversal of 18702216718850 is 5881761220781.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18702216718853) 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, 26717452106 + ... + 26717452805.

It is an arithmetic number, because the mean of its divisors is an integer number (1656482052272).

Almost surely, 2^{18702216718850} is an apocalyptic number.

18702216718850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18702216718850 is an abundant number, since it is smaller than the sum of its proper divisors (21053352535678).

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

18702216718850 is a wasteful number, since it uses less digits than its factorization.

18702216718850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53434904930 (or 53434904925 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 56.

The spelling of 18702216718850 in words is "eighteen trillion, seven hundred two billion, two hundred sixteen million, seven hundred eighteen thousand, eight hundred fifty".