77728670703023 has 2 divisors, whose sum is σ = 77728670703024. Its totient is φ = 77728670703022.

The previous prime is 77728670702989. The next prime is 77728670703043. The reversal of 77728670703023 is 32030707682777.

It is a strong prime.

It is an emirp because it is prime and its reverse (32030707682777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77728670703023 - 2¹⁰ = 77728670701999 is a prime.

It is a super-2 number, since 2×77728670703023² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77728670703043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38864335351511 + 38864335351512.

It is an arithmetic number, because the mean of its divisors is an integer number (38864335351512).

Almost surely, 2^{77728670703023} is an apocalyptic number.

77728670703023 is a deficient number, since it is larger than the sum of its proper divisors (1).

77728670703023 is an equidigital number, since it uses as much as digits as its factorization.

77728670703023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29042496, while the sum is 59.

The spelling of 77728670703023 in words is "seventy-seven trillion, seven hundred twenty-eight billion, six hundred seventy million, seven hundred three thousand, twenty-three".