18514045680 has 320 divisors, whose sum is σ = 64777187328. Its totient is φ = 4342947840.

The previous prime is 18514045679. The next prime is 18514045691. The reversal of 18514045680 is 8654041581.

It is a super-2 number, since 2×18514045680² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6478812 + ... + 6481668.

Almost surely, 2^18514045680 is an apocalyptic number.

18514045680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18514045680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32388593664).

18514045680 is an abundant number, since it is smaller than the sum of its proper divisors (46263141648).

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

18514045680 is a wasteful number, since it uses less digits than its factorization.

18514045680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 18514045680 in words is "eighteen billion, five hundred fourteen million, forty-five thousand, six hundred eighty".