12891530562 has 32 divisors (see below), whose sum is σ = 26514734400. Its totient is φ = 4176868608.

The previous prime is 12891530551. The next prime is 12891530599. The reversal of 12891530562 is 26503519821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173083 + ... + 236094.

It is an arithmetic number, because the mean of its divisors is an integer number (828585450).

Almost surely, 2^12891530562 is an apocalyptic number.

12891530562 is an abundant number, since it is smaller than the sum of its proper divisors (13623203838).

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

12891530562 is a wasteful number, since it uses less digits than its factorization.

12891530562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409330.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 12891530562 in words is "twelve billion, eight hundred ninety-one million, five hundred thirty thousand, five hundred sixty-two".