2620450432643 has 4 divisors (see below), whose sum is σ = 2634170068608. Its totient is φ = 2606730796680.

The previous prime is 2620450432631. The next prime is 2620450432651. The reversal of 2620450432643 is 3462340540262.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2620450432643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2620450432643.

It is not an unprimeable number, because it can be changed into a prime (2620450432603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6859817696 + ... + 6859818077.

It is an arithmetic number, because the mean of its divisors is an integer number (658542517152).

Almost surely, 2^{2620450432643} is an apocalyptic number.

2620450432643 is a deficient number, since it is larger than the sum of its proper divisors (13719635965).

2620450432643 is a wasteful number, since it uses less digits than its factorization.

2620450432643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13719635964.

The product of its (nonzero) digits is 829440, while the sum is 41.

The spelling of 2620450432643 in words is "two trillion, six hundred twenty billion, four hundred fifty million, four hundred thirty-two thousand, six hundred forty-three".