1657563640963 has 2 divisors, whose sum is σ = 1657563640964. Its totient is φ = 1657563640962.

The previous prime is 1657563640879. The next prime is 1657563641003. The reversal of 1657563640963 is 3690463657561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1657563640963 - 2⁹ = 1657563640451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1657563440963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828781820481 + 828781820482.

It is an arithmetic number, because the mean of its divisors is an integer number (828781820482).

Almost surely, 2^{1657563640963} is an apocalyptic number.

1657563640963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1657563640963 is an equidigital number, since it uses as much as digits as its factorization.

1657563640963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73483200, while the sum is 61.

The spelling of 1657563640963 in words is "one trillion, six hundred fifty-seven billion, five hundred sixty-three million, six hundred forty thousand, nine hundred sixty-three".