77802716078065 has 32 divisors (see below), whose sum is σ = 102861029647872. Its totient is φ = 56022589920000.

The previous prime is 77802716078011. The next prime is 77802716078083. The reversal of 77802716078065 is 56087061720877.

It is not a de Polignac number, because 77802716078065 - 2¹³ = 77802716069873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77802716077988 and 77802716078006.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 532045899 + ... + 532192111.

It is an arithmetic number, because the mean of its divisors is an integer number (3214407176496).

Almost surely, 2^{77802716078065} is an apocalyptic number.

It is an amenable number.

77802716078065 is a deficient number, since it is larger than the sum of its proper divisors (25058313569807).

77802716078065 is a wasteful number, since it uses less digits than its factorization.

77802716078065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242121.

The product of its (nonzero) digits is 55319040, while the sum is 64.

The spelling of 77802716078065 in words is "seventy-seven trillion, eight hundred two billion, seven hundred sixteen million, seventy-eight thousand, sixty-five".