77829648912 has 60 divisors (see below), whose sum is σ = 218643220224. Its totient is φ = 25844560320.

The previous prime is 77829648907. The next prime is 77829648929. The reversal of 77829648912 is 21984692877.

77829648912 is a `hidden beast` number, since 77 + 82 + 9 + 6 + 489 + 1 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 77829648912.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 989664 + ... + 1065407.

Almost surely, 2^77829648912 is an apocalyptic number.

77829648912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

77829648912 is an abundant number, since it is smaller than the sum of its proper divisors (140813571312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77829648912 is a wasteful number, since it uses less digits than its factorization.

77829648912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055348 (or 2055339 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The spelling of 77829648912 in words is "seventy-seven billion, eight hundred twenty-nine million, six hundred forty-eight thousand, nine hundred twelve".