2355691356643 has 2 divisors, whose sum is σ = 2355691356644. Its totient is φ = 2355691356642.

The previous prime is 2355691356593. The next prime is 2355691356703. The reversal of 2355691356643 is 3466531965532.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2355691356643 is a prime.

It is not a weakly prime, because it can be changed into another prime (2355691356043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177845678321 + 1177845678322.

It is an arithmetic number, because the mean of its divisors is an integer number (1177845678322).

Almost surely, 2^{2355691356643} is an apocalyptic number.

2355691356643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2355691356643 is an equidigital number, since it uses as much as digits as its factorization.

2355691356643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488000, while the sum is 58.

The spelling of 2355691356643 in words is "two trillion, three hundred fifty-five billion, six hundred ninety-one million, three hundred fifty-six thousand, six hundred forty-three".