766473321563 has 2 divisors, whose sum is σ = 766473321564. Its totient is φ = 766473321562.

The previous prime is 766473321547. The next prime is 766473321569. The reversal of 766473321563 is 365123374667.

It is a strong prime.

It is an emirp because it is prime and its reverse (365123374667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 766473321563 - 2⁴ = 766473321547 is a prime.

It is not a weakly prime, because it can be changed into another prime (766473321569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383236660781 + 383236660782.

It is an arithmetic number, because the mean of its divisors is an integer number (383236660782).

Almost surely, 2^766473321563 is an apocalyptic number.

766473321563 is a deficient number, since it is larger than the sum of its proper divisors (1).

766473321563 is an equidigital number, since it uses as much as digits as its factorization.

766473321563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 53.

The spelling of 766473321563 in words is "seven hundred sixty-six billion, four hundred seventy-three million, three hundred twenty-one thousand, five hundred sixty-three".