18151522752 has 448 divisors, whose sum is σ = 56929812480. Its totient is φ = 5051289600.

The previous prime is 18151522729. The next prime is 18151522777. The reversal of 18151522752 is 25722515181.

It is a happy number.

Its product of digits (56000) is a multiple of the sum of its prime factors (280).

It is a self number, because there is not a number n which added to its sum of digits gives 18151522752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142925313 + ... + 142925439.

Almost surely, 2^18151522752 is an apocalyptic number.

18151522752 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 18151522752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28464906240).

18151522752 is an abundant number, since it is smaller than the sum of its proper divisors (38778289728).

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

18151522752 is a wasteful number, since it uses less digits than its factorization.

18151522752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 270 counting only the distinct ones).

The product of its digits is 56000, while the sum is 39.

The spelling of 18151522752 in words is "eighteen billion, one hundred fifty-one million, five hundred twenty-two thousand, seven hundred fifty-two".