77078471201 has 4 divisors (see below), whose sum is σ = 77085381012. Its totient is φ = 77071561392.

The previous prime is 77078471191. The next prime is 77078471209. The reversal of 77078471201 is 10217487077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10217487077 = 7 ⋅1459641011.

It can be written as a sum of positive squares in 2 ways, for example, as 46991834176 + 30086637025 = 216776^2 + 173455^2 .

It is a cyclic number.

It is not a de Polignac number, because 77078471201 - 2²² = 77074276897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77078471209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3438146 + ... + 3460491.

It is an arithmetic number, because the mean of its divisors is an integer number (19271345253).

Almost surely, 2^77078471201 is an apocalyptic number.

It is an amenable number.

77078471201 is a deficient number, since it is larger than the sum of its proper divisors (6909811).

77078471201 is a wasteful number, since it uses less digits than its factorization.

77078471201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909810.

The product of its (nonzero) digits is 153664, while the sum is 44.

The spelling of 77078471201 in words is "seventy-seven billion, seventy-eight million, four hundred seventy-one thousand, two hundred one".