18953834855424 has 352 divisors, whose sum is σ = 59754189888000. Its totient is φ = 5226242703360.

The previous prime is 18953834855359. The next prime is 18953834855497. The reversal of 18953834855424 is 42455843835981.

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 31 ways as a sum of consecutive naturals, for example, 1683133954 + ... + 1683145214.

Almost surely, 2^{18953834855424} is an apocalyptic number.

18953834855424 is a gapful number since it is divisible by the number (14) 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 18953834855424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29877094944000).

18953834855424 is an abundant number, since it is smaller than the sum of its proper divisors (40800355032576).

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

18953834855424 is a wasteful number, since it uses less digits than its factorization.

18953834855424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14019 (or 14001 counting only the distinct ones).

The product of its digits is 663552000, while the sum is 69.

The spelling of 18953834855424 in words is "eighteen trillion, nine hundred fifty-three billion, eight hundred thirty-four million, eight hundred fifty-five thousand, four hundred twenty-four".