1642708547563 has 2 divisors, whose sum is σ = 1642708547564. Its totient is φ = 1642708547562.

The previous prime is 1642708547551. The next prime is 1642708547611. The reversal of 1642708547563 is 3657458072461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1642708547563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1642708547498 and 1642708547507.

It is not a weakly prime, because it can be changed into another prime (1642708545563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821354273781 + 821354273782.

It is an arithmetic number, because the mean of its divisors is an integer number (821354273782).

Almost surely, 2^{1642708547563} is an apocalyptic number.

1642708547563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642708547563 is an equidigital number, since it uses as much as digits as its factorization.

1642708547563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33868800, while the sum is 58.

The spelling of 1642708547563 in words is "one trillion, six hundred forty-two billion, seven hundred eight million, five hundred forty-seven thousand, five hundred sixty-three".