18432469745808 has 80 divisors (see below), whose sum is σ = 50419061830656. Its totient is φ = 5782639749120.

The previous prime is 18432469745803. The next prime is 18432469745827. The reversal of 18432469745808 is 80854796423481.

It is a super-2 number, since 2×18432469745808² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18432469745803) 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, 61526298 + ... + 61825158.

It is a 1-persistent number, because it is pandigital, but 2⋅18432469745808 = 36864939491616 is not.

Almost surely, 2^{18432469745808} is an apocalyptic number.

It is an amenable number.

18432469745808 is an abundant number, since it is smaller than the sum of its proper divisors (31986592084848).

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

18432469745808 is a wasteful number, since it uses less digits than its factorization.

18432469745808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374472 (or 374466 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 69.

The spelling of 18432469745808 in words is "eighteen trillion, four hundred thirty-two billion, four hundred sixty-nine million, seven hundred forty-five thousand, eight hundred eight".