6942551563 has 2 divisors, whose sum is σ = 6942551564. Its totient is φ = 6942551562.

The previous prime is 6942551557. The next prime is 6942551617. The reversal of 6942551563 is 3651552496.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6942551563 - 2⁹ = 6942551051 is a prime.

It is not a weakly prime, because it can be changed into another prime (6942551503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3471275781 + 3471275782.

It is an arithmetic number, because the mean of its divisors is an integer number (3471275782).

Almost surely, 2^6942551563 is an apocalyptic number.

6942551563 is a deficient number, since it is larger than the sum of its proper divisors (1).

6942551563 is an equidigital number, since it uses as much as digits as its factorization.

6942551563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972000, while the sum is 46.

The square root of 6942551563 is about 83321.9752706331. The cubic root of 6942551563 is about 1907.6837105021.

The spelling of 6942551563 in words is "six billion, nine hundred forty-two million, five hundred fifty-one thousand, five hundred sixty-three".