18531425779360 has 384 divisors, whose sum is σ = 50337598832640. Its totient is φ = 6393810948096.

The previous prime is 18531425779357. The next prime is 18531425779367. The reversal of 18531425779360 is 6397752413581.

It is not an unprimeable number, because it can be changed into a prime (18531425779367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1265886921 + ... + 1265901559.

It is an arithmetic number, because the mean of its divisors is an integer number (131087496960).

It is a 1-persistent number, because it is pandigital, but 2⋅18531425779360 = 37062851558720 is not.

Almost surely, 2^{18531425779360} is an apocalyptic number.

18531425779360 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 18531425779360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25168799416320).

18531425779360 is an abundant number, since it is smaller than the sum of its proper divisors (31806173053280).

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

18531425779360 is a wasteful number, since it uses less digits than its factorization.

18531425779360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15300 (or 15292 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 61.

The spelling of 18531425779360 in words is "eighteen trillion, five hundred thirty-one billion, four hundred twenty-five million, seven hundred seventy-nine thousand, three hundred sixty".