77532716839 has 2 divisors, whose sum is σ = 77532716840. Its totient is φ = 77532716838.

The previous prime is 77532716783. The next prime is 77532716857. The reversal of 77532716839 is 93861723577.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (93861723577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77532716839 - 2³¹ = 75385233191 is a prime.

It is a super-2 number, since 2×77532716839² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77532716539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38766358419 + 38766358420.

It is an arithmetic number, because the mean of its divisors is an integer number (38766358420).

Almost surely, 2^77532716839 is an apocalyptic number.

77532716839 is a deficient number, since it is larger than the sum of its proper divisors (1).

77532716839 is an equidigital number, since it uses as much as digits as its factorization.

77532716839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13335840, while the sum is 58.

The spelling of 77532716839 in words is "seventy-seven billion, five hundred thirty-two million, seven hundred sixteen thousand, eight hundred thirty-nine".