77825078052807 has 8 divisors (see below), whose sum is σ = 103767359726320. Its totient is φ = 51883090873920.

The previous prime is 77825078052803. The next prime is 77825078052811. The reversal of 77825078052807 is 70825087052877.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77825078052803) and next prime (77825078052811).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77825078052807 - 2² = 77825078052803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77825078052803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73006294 + ... + 74064627.

It is an arithmetic number, because the mean of its divisors is an integer number (12970919965790).

Almost surely, 2^{77825078052807} is an apocalyptic number.

77825078052807 is a deficient number, since it is larger than the sum of its proper divisors (25942281673513).

77825078052807 is a wasteful number, since it uses less digits than its factorization.

77825078052807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147247313.

The product of its (nonzero) digits is 122931200, while the sum is 66.

The spelling of 77825078052807 in words is "seventy-seven trillion, eight hundred twenty-five billion, seventy-eight million, fifty-two thousand, eight hundred seven".