2643981350963 has 4 divisors (see below), whose sum is σ = 2643986523360. Its totient is φ = 2643976178568.

The previous prime is 2643981350951. The next prime is 2643981350977. The reversal of 2643981350963 is 3690531893462.

2643981350963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2643981350963 - 2⁸ = 2643981350707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2643981350863) 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, 1723520 + ... + 2873757.

It is an arithmetic number, because the mean of its divisors is an integer number (660996630840).

Almost surely, 2^{2643981350963} is an apocalyptic number.

2643981350963 is a deficient number, since it is larger than the sum of its proper divisors (5172397).

2643981350963 is an equidigital number, since it uses as much as digits as its factorization.

2643981350963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5172396.

The product of its (nonzero) digits is 25194240, while the sum is 59.

The spelling of 2643981350963 in words is "two trillion, six hundred forty-three billion, nine hundred eighty-one million, three hundred fifty thousand, nine hundred sixty-three".