77886268877 has 12 divisors (see below), whose sum is σ = 78958322196. Its totient is φ = 76821235200.

The previous prime is 77886268847. The next prime is 77886268903.

77886268877 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 6 ways, for example, as 18492192196 + 59394076681 = 135986^2 + 243709^2 .

It is not a de Polignac number, because 77886268877 - 2³⁰ = 76812527053 is a prime.

It is a super-2 number, since 2×77886268877² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77886268847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7303133 + ... + 7313789.

It is an arithmetic number, because the mean of its divisors is an integer number (6579860183).

Almost surely, 2^77886268877 is an apocalyptic number.

It is an amenable number.

77886268877 is a deficient number, since it is larger than the sum of its proper divisors (1072053319).

77886268877 is a wasteful number, since it uses less digits than its factorization.

77886268877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11296 (or 11027 counting only the distinct ones).

The product of its digits is 708083712, while the sum is 74.

The spelling of 77886268877 in words is "seventy-seven billion, eight hundred eighty-six million, two hundred sixty-eight thousand, eight hundred seventy-seven".