18257582712 has 64 divisors (see below), whose sum is σ = 47732014080. Its totient is φ = 5808604032.

The previous prime is 18257582687. The next prime is 18257582713. The reversal of 18257582712 is 21728575281.

It is a super-4 number, since 4×18257582712⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18257582713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219858 + ... + 291294.

It is an arithmetic number, because the mean of its divisors is an integer number (745812720).

Almost surely, 2^18257582712 is an apocalyptic number.

18257582712 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 18257582712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23866007040).

18257582712 is an abundant number, since it is smaller than the sum of its proper divisors (29474431368).

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

18257582712 is a wasteful number, since it uses less digits than its factorization.

18257582712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71932 (or 71928 counting only the distinct ones).

The product of its digits is 627200, while the sum is 48.

The spelling of 18257582712 in words is "eighteen billion, two hundred fifty-seven million, five hundred eighty-two thousand, seven hundred twelve".