12261581482863 has 16 divisors (see below), whose sum is σ = 16730107095680. Its totient is φ = 7983747392544.

The previous prime is 12261581482859. The next prime is 12261581482879. The reversal of 12261581482863 is 36828418516221.

It is a happy number.

It is not a de Polignac number, because 12261581482863 - 2² = 12261581482859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261581482853) 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, 1278181 + ... + 5114382.

It is an arithmetic number, because the mean of its divisors is an integer number (1045631693480).

Almost surely, 2^{12261581482863} is an apocalyptic number.

12261581482863 is a deficient number, since it is larger than the sum of its proper divisors (4468525612817).

12261581482863 is a wasteful number, since it uses less digits than its factorization.

12261581482863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6407478.

The product of its digits is 8847360, while the sum is 57.

The spelling of 12261581482863 in words is "twelve trillion, two hundred sixty-one billion, five hundred eighty-one million, four hundred eighty-two thousand, eight hundred sixty-three".