99999999776412 has 72 divisors (see below), whose sum is σ = 254922485126400. Its totient is φ = 33051587958048.

The previous prime is 99999999776363. The next prime is 99999999776423. The reversal of 99999999776412 is 21467799999999.

99999999776412 is a `hidden beast` number, since 9 + 9 + 9 + 9 + 9 + 99 + 97 + 7 + 6 + 412 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20124612 + ... + 24596747.

It is an arithmetic number, because the mean of its divisors is an integer number (3540590071200).

Almost surely, 2^{99999999776412} is an apocalyptic number.

It is an amenable number.

99999999776412 is an abundant number, since it is smaller than the sum of its proper divisors (154922485349988).

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

99999999776412 is a wasteful number, since it uses less digits than its factorization.

99999999776412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44721895 (or 44721890 counting only the distinct ones).

The product of its digits is 101245887792, while the sum is 99.

The spelling of 99999999776412 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, seven hundred seventy-six thousand, four hundred twelve".