18278353080 has 768 divisors, whose sum is σ = 71856046080. Its totient is φ = 4138573824.

The previous prime is 18278353057. The next prime is 18278353133. The reversal of 18278353080 is 8035387281.

18278353080 is a `hidden beast` number, since 18 + 27 + 8 + 3 + 530 + 80 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 143923977 + ... + 143924103.

It is an arithmetic number, because the mean of its divisors is an integer number (93562560).

Almost surely, 2^18278353080 is an apocalyptic number.

18278353080 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 18278353080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35928023040).

18278353080 is an abundant number, since it is smaller than the sum of its proper divisors (53577693000).

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

18278353080 is a wasteful number, since it uses less digits than its factorization.

18278353080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 18278353080 in words is "eighteen billion, two hundred seventy-eight million, three hundred fifty-three thousand, eighty".