77008045205 has 128 divisors (see below), whose sum is σ = 120488933376. Its totient is φ = 45958348800.

The previous prime is 77008045183. The next prime is 77008045207. The reversal of 77008045205 is 50254080077.

It is not a de Polignac number, because 77008045205 - 2¹⁰ = 77008044181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77008045207) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 70198217 + ... + 70199313.

It is an arithmetic number, because the mean of its divisors is an integer number (941319792).

Almost surely, 2^77008045205 is an apocalyptic number.

It is an amenable number.

77008045205 is a deficient number, since it is larger than the sum of its proper divisors (43480888171).

77008045205 is a wasteful number, since it uses less digits than its factorization.

77008045205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287.

The product of its (nonzero) digits is 78400, while the sum is 38.

The spelling of 77008045205 in words is "seventy-seven billion, eight million, forty-five thousand, two hundred five".