56643571039963 has 2 divisors, whose sum is σ = 56643571039964. Its totient is φ = 56643571039962.

The previous prime is 56643571039919. The next prime is 56643571040099. The reversal of 56643571039963 is 36993017534665.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56643571039963 is a prime.

It is not a weakly prime, because it can be changed into another prime (56643571033963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28321785519981 + 28321785519982.

It is an arithmetic number, because the mean of its divisors is an integer number (28321785519982).

Almost surely, 2^{56643571039963} is an apocalyptic number.

56643571039963 is a deficient number, since it is larger than the sum of its proper divisors (1).

56643571039963 is an equidigital number, since it uses as much as digits as its factorization.

56643571039963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 330674400, while the sum is 67.

The spelling of 56643571039963 in words is "fifty-six trillion, six hundred forty-three billion, five hundred seventy-one million, thirty-nine thousand, nine hundred sixty-three".