12018972952500 has 240 divisors, whose sum is σ = 35397365617152. Its totient is φ = 3172822016000.

The previous prime is 12018972952487. The next prime is 12018972952501. The reversal of 12018972952500 is 525927981021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018972952501) 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 79 ways as a sum of consecutive naturals, for example, 731384284 + ... + 731400716.

Almost surely, 2^{12018972952500} is an apocalyptic number.

12018972952500 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 12018972952500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17698682808576).

12018972952500 is an abundant number, since it is smaller than the sum of its proper divisors (23378392664652).

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

12018972952500 is a wasteful number, since it uses less digits than its factorization.

12018972952500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17436 (or 17419 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 51.

The spelling of 12018972952500 in words is "twelve trillion, eighteen billion, nine hundred seventy-two million, nine hundred fifty-two thousand, five hundred".