2646312136463 has 4 divisors (see below), whose sum is σ = 2659610187600. Its totient is φ = 2633014085328.

The previous prime is 2646312136459. The next prime is 2646312136477. The reversal of 2646312136463 is 3646312136462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2646312136463 - 2² = 2646312136459 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 (2646312136423) 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, 6649025270 + ... + 6649025667.

It is an arithmetic number, because the mean of its divisors is an integer number (664902546900).

Almost surely, 2^{2646312136463} is an apocalyptic number.

2646312136463 is a deficient number, since it is larger than the sum of its proper divisors (13298051137).

2646312136463 is a wasteful number, since it uses less digits than its factorization.

2646312136463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13298051136.

The product of its digits is 2239488, while the sum is 47.

Subtracting 2646312136463 from its reverse (3646312136462), we obtain a palindrome (999999999999).

The spelling of 2646312136463 in words is "two trillion, six hundred forty-six billion, three hundred twelve million, one hundred thirty-six thousand, four hundred sixty-three".