77802738336019 has 2 divisors, whose sum is σ = 77802738336020. Its totient is φ = 77802738336018.

The previous prime is 77802738335981. The next prime is 77802738336023. The reversal of 77802738336019 is 91063383720877.

It is a strong prime.

It is an emirp because it is prime and its reverse (91063383720877) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77802738336019 - 2⁷ = 77802738335891 is a prime.

It is a super-2 number, since 2×77802738336019² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77802738336419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38901369168009 + 38901369168010.

It is an arithmetic number, because the mean of its divisors is an integer number (38901369168010).

Almost surely, 2^{77802738336019} is an apocalyptic number.

77802738336019 is a deficient number, since it is larger than the sum of its proper divisors (1).

77802738336019 is an equidigital number, since it uses as much as digits as its factorization.

77802738336019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64012032, while the sum is 64.

The spelling of 77802738336019 in words is "seventy-seven trillion, eight hundred two billion, seven hundred thirty-eight million, three hundred thirty-six thousand, nineteen".