77328781833727 has 2 divisors, whose sum is σ = 77328781833728. Its totient is φ = 77328781833726.

The previous prime is 77328781833713. The next prime is 77328781833761. The reversal of 77328781833727 is 72733818782377.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77328781833727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77328781833727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77328781833227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38664390916863 + 38664390916864.

It is an arithmetic number, because the mean of its divisors is an integer number (38664390916864).

Almost surely, 2^{77328781833727} is an apocalyptic number.

77328781833727 is a deficient number, since it is larger than the sum of its proper divisors (1).

77328781833727 is an equidigital number, since it uses as much as digits as its factorization.

77328781833727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 929359872, while the sum is 73.

The spelling of 77328781833727 in words is "seventy-seven trillion, three hundred twenty-eight billion, seven hundred eighty-one million, eight hundred thirty-three thousand, seven hundred twenty-seven".