12651415445533 has 4 divisors (see below), whose sum is σ = 12676768984000. Its totient is φ = 12626061907068.

The previous prime is 12651415445521. The next prime is 12651415445563. The reversal of 12651415445533 is 33554451415621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12651415445533 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 (12651415445563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12676768485 + ... + 12676769482.

It is an arithmetic number, because the mean of its divisors is an integer number (3169192246000).

Almost surely, 2^{12651415445533} is an apocalyptic number.

It is an amenable number.

12651415445533 is a deficient number, since it is larger than the sum of its proper divisors (25353538467).

12651415445533 is an equidigital number, since it uses as much as digits as its factorization.

12651415445533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25353538466.

The product of its digits is 4320000, while the sum is 49.

The spelling of 12651415445533 in words is "twelve trillion, six hundred fifty-one billion, four hundred fifteen million, four hundred forty-five thousand, five hundred thirty-three".