12891497622528 has 352 divisors, whose sum is σ = 39653370432000. Its totient is φ = 3647403196416.

The previous prime is 12891497622491. The next prime is 12891497622529. The reversal of 12891497622528 is 82522679419821.

It is a super-2 number, since 2×12891497622528² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12891497622529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1079774383 + ... + 1079786321.

Almost surely, 2^{12891497622528} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12891497622528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19826685216000).

12891497622528 is an abundant number, since it is smaller than the sum of its proper divisors (26761872809472).

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

12891497622528 is a wasteful number, since it uses less digits than its factorization.

12891497622528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12455 (or 12437 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 66.

The spelling of 12891497622528 in words is "twelve trillion, eight hundred ninety-one billion, four hundred ninety-seven million, six hundred twenty-two thousand, five hundred twenty-eight".