77479863563 has 2 divisors, whose sum is σ = 77479863564. Its totient is φ = 77479863562.

The previous prime is 77479863551. The next prime is 77479863569. The reversal of 77479863563 is 36536897477.

It is a strong prime.

It is an emirp because it is prime and its reverse (36536897477) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77479863563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77479863563.

It is not a weakly prime, because it can be changed into another prime (77479863569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38739931781 + 38739931782.

It is an arithmetic number, because the mean of its divisors is an integer number (38739931782).

Almost surely, 2^77479863563 is an apocalyptic number.

77479863563 is a deficient number, since it is larger than the sum of its proper divisors (1).

77479863563 is an equidigital number, since it uses as much as digits as its factorization.

77479863563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160030080, while the sum is 65.

The spelling of 77479863563 in words is "seventy-seven billion, four hundred seventy-nine million, eight hundred sixty-three thousand, five hundred sixty-three".