18268151220792 has 384 divisors, whose sum is σ = 54915239208960. Its totient is φ = 5440264623360.

The previous prime is 18268151220791. The next prime is 18268151220883. The reversal of 18268151220792 is 29702215186281.

It is a happy number.

18268151220792 is a `hidden beast` number, since 1 + 8 + 26 + 81 + 512 + 20 + 7 + 9 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18268151220791) 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, 6425658523 + ... + 6425661365.

It is an arithmetic number, because the mean of its divisors is an integer number (143008435440).

Almost surely, 2^{18268151220792} is an apocalyptic number.

18268151220792 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 18268151220792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27457619604480).

18268151220792 is an abundant number, since it is smaller than the sum of its proper divisors (36647087988168).

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

18268151220792 is a wasteful number, since it uses less digits than its factorization.

18268151220792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543 (or 3536 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 18268151220792 in words is "eighteen trillion, two hundred sixty-eight billion, one hundred fifty-one million, two hundred twenty thousand, seven hundred ninety-two".