77863238476 has 12 divisors (see below), whose sum is σ = 136290932008. Its totient is φ = 38922972192.

The previous prime is 77863238473. The next prime is 77863238489. The reversal of 77863238476 is 67483236877.

It is not an unprimeable number, because it can be changed into a prime (77863238473) 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, 2141481 + ... + 2177536.

Almost surely, 2^77863238476 is an apocalyptic number.

It is an amenable number.

77863238476 is a deficient number, since it is larger than the sum of its proper divisors (58427693532).

77863238476 is a wasteful number, since it uses less digits than its factorization.

77863238476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323528 (or 4323526 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 61.

The spelling of 77863238476 in words is "seventy-seven billion, eight hundred sixty-three million, two hundred thirty-eight thousand, four hundred seventy-six".