12057558581520 has 400 divisors, whose sum is σ = 42371740838592. Its totient is φ = 3190749719040.

The previous prime is 12057558581489. The next prime is 12057558581539. The reversal of 12057558581520 is 2518585575021.

12057558581520 is a `hidden beast` number, since 1 + 2 + 0 + 5 + 7 + 5 + 5 + 8 + 581 + 52 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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, 206248614 + ... + 206307066.

Almost surely, 2^{12057558581520} is an apocalyptic number.

12057558581520 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 12057558581520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21185870419296).

12057558581520 is an abundant number, since it is smaller than the sum of its proper divisors (30314182257072).

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

12057558581520 is an frugal number, since it uses more digits than its factorization.

12057558581520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58624 (or 58594 counting only the distinct ones).

The product of its (nonzero) digits is 5600000, while the sum is 54.

The spelling of 12057558581520 in words is "twelve trillion, fifty-seven billion, five hundred fifty-eight million, five hundred eighty-one thousand, five hundred twenty".