12662558989056 has 216 divisors, whose sum is σ = 36903129614624. Its totient is φ = 4175361146880.

The previous prime is 12662558989043. The next prime is 12662558989103. The reversal of 12662558989056 is 65098985526621.

12662558989056 is a `hidden beast` number, since 1 + 2 + 6 + 62 + 558 + 9 + 8 + 9 + 0 + 5 + 6 = 666.

It is a super-2 number, since 2×12662558989056² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 516468510 + ... + 516493026.

Almost surely, 2^{12662558989056} is an apocalyptic number.

12662558989056 is a gapful number since it is divisible by the number (16) 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 12662558989056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18451564807312).

12662558989056 is an abundant number, since it is smaller than the sum of its proper divisors (24240570625568).

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

12662558989056 is a wasteful number, since it uses less digits than its factorization.

12662558989056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26947 (or 26930 counting only the distinct ones).

The product of its (nonzero) digits is 559872000, while the sum is 72.

The spelling of 12662558989056 in words is "twelve trillion, six hundred sixty-two billion, five hundred fifty-eight million, nine hundred eighty-nine thousand, fifty-six".