18015014910420 has 192 divisors, whose sum is σ = 61148411412480. Its totient is φ = 4366809014400.

The previous prime is 18015014910419. The next prime is 18015014910433. The reversal of 18015014910420 is 2401941051081.

18015014910420 is a `hidden beast` number, since 1 + 8 + 0 + 1 + 501 + 49 + 104 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57050689 + ... + 57365591.

It is an arithmetic number, because the mean of its divisors is an integer number (318481309440).

Almost surely, 2^{18015014910420} is an apocalyptic number.

18015014910420 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 18015014910420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30574205706240).

18015014910420 is an abundant number, since it is smaller than the sum of its proper divisors (43133396502060).

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

18015014910420 is a wasteful number, since it uses less digits than its factorization.

18015014910420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324563 (or 324555 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 18015014910420 in words is "eighteen trillion, fifteen billion, fourteen million, nine hundred ten thousand, four hundred twenty".