77872827877 has 32 divisors (see below), whose sum is σ = 89193484800. Its totient is φ = 67352352768.

The previous prime is 77872827863. The next prime is 77872827899.

77872827877 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 77872827877 - 2¹¹ = 77872825829 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 (77872827827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84736024 + ... + 84736942.

It is an arithmetic number, because the mean of its divisors is an integer number (2787296400).

Almost surely, 2^77872827877 is an apocalyptic number.

It is an amenable number.

77872827877 is a deficient number, since it is larger than the sum of its proper divisors (11320656923).

77872827877 is a wasteful number, since it uses less digits than its factorization.

77872827877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245.

The product of its digits is 240945152, while the sum is 70.

The spelling of 77872827877 in words is "seventy-seven billion, eight hundred seventy-two million, eight hundred twenty-seven thousand, eight hundred seventy-seven".