77856001000339 has 2 divisors, whose sum is σ = 77856001000340. Its totient is φ = 77856001000338.

The previous prime is 77856001000303. The next prime is 77856001000391. The reversal of 77856001000339 is 93300010065877.

It is a weak prime.

It is an emirp because it is prime and its reverse (93300010065877) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77856001000339 - 2¹⁷ = 77856000869267 is a prime.

It is a super-2 number, since 2×77856001000339² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77856001000292 and 77856001000301.

It is not a weakly prime, because it can be changed into another prime (77856001000639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38928000500169 + 38928000500170.

It is an arithmetic number, because the mean of its divisors is an integer number (38928000500170).

Almost surely, 2^{77856001000339} is an apocalyptic number.

77856001000339 is a deficient number, since it is larger than the sum of its proper divisors (1).

77856001000339 is an equidigital number, since it uses as much as digits as its factorization.

77856001000339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 77856001000339 in words is "seventy-seven trillion, eight hundred fifty-six billion, one million, three hundred thirty-nine", and thus it is an aban number.