77557275583 has 2 divisors, whose sum is σ = 77557275584. Its totient is φ = 77557275582.

The previous prime is 77557275563. The next prime is 77557275623. The reversal of 77557275583 is 38557275577.

It is a weak prime.

It is an emirp because it is prime and its reverse (38557275577) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77557275583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77557275563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38778637791 + 38778637792.

It is an arithmetic number, because the mean of its divisors is an integer number (38778637792).

Almost surely, 2^77557275583 is an apocalyptic number.

77557275583 is a deficient number, since it is larger than the sum of its proper divisors (1).

77557275583 is an equidigital number, since it uses as much as digits as its factorization.

77557275583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72030000, while the sum is 61.

The spelling of 77557275583 in words is "seventy-seven billion, five hundred fifty-seven million, two hundred seventy-five thousand, five hundred eighty-three".