18309744470680 has 64 divisors (see below), whose sum is σ = 44366555217600. Its totient is φ = 6760424133120.

The previous prime is 18309744470639. The next prime is 18309744470687. The reversal of 18309744470680 is 8607444790381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18309744470687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43272381 + ... + 43693459.

It is an arithmetic number, because the mean of its divisors is an integer number (693227425275).

Almost surely, 2^{18309744470680} is an apocalyptic number.

18309744470680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18309744470680 is an abundant number, since it is smaller than the sum of its proper divisors (26056810746920).

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

18309744470680 is a wasteful number, since it uses less digits than its factorization.

18309744470680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504724 (or 504720 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 18309744470680 in words is "eighteen trillion, three hundred nine billion, seven hundred forty-four million, four hundred seventy thousand, six hundred eighty".