18689852246472 has 384 divisors, whose sum is σ = 58419927820800. Its totient is φ = 5347090636800.

The previous prime is 18689852246441. The next prime is 18689852246477. The reversal of 18689852246472 is 27464225898681.

It is a happy number.

18689852246472 is a `hidden beast` number, since 1 + 8 + 6 + 8 + 98 + 5 + 2 + 2 + 464 + 72 = 666.

It is a hoax number, since the sum of its digits (72) 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 (72).

It is a self number, because there is not a number n which added to its sum of digits gives 18689852246472.

It is not an unprimeable number, because it can be changed into a prime (18689852246477) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 135761578 + ... + 135899174.

It is an arithmetic number, because the mean of its divisors is an integer number (152135228700).

Almost surely, 2^{18689852246472} is an apocalyptic number.

18689852246472 is a gapful number since it is divisible by the number (12) 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 18689852246472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29209963910400).

18689852246472 is an abundant number, since it is smaller than the sum of its proper divisors (39730075574328).

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

18689852246472 is a wasteful number, since it uses less digits than its factorization.

18689852246472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137797 (or 137790 counting only the distinct ones).

The product of its digits is 743178240, while the sum is 72.

The spelling of 18689852246472 in words is "eighteen trillion, six hundred eighty-nine billion, eight hundred fifty-two million, two hundred forty-six thousand, four hundred seventy-two".