18309744470679 has 64 divisors (see below), whose sum is σ = 25934730485760. Its totient is φ = 11469911040000.

The previous prime is 18309744470639. The next prime is 18309744470687. The reversal of 18309744470679 is 97607444790381.

It is not a de Polignac number, because 18309744470679 - 2¹² = 18309744466583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18309744470639) 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, 4169832574 + ... + 4169836964.

It is an arithmetic number, because the mean of its divisors is an integer number (405230163840).

Almost surely, 2^{18309744470679} is an apocalyptic number.

18309744470679 is a deficient number, since it is larger than the sum of its proper divisors (7624986015081).

18309744470679 is a wasteful number, since it uses less digits than its factorization.

18309744470679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672.

The product of its (nonzero) digits is 256048128, while the sum is 69.

The spelling of 18309744470679 in words is "eighteen trillion, three hundred nine billion, seven hundred forty-four million, four hundred seventy thousand, six hundred seventy-nine".