99812937796906 has 4 divisors (see below), whose sum is σ = 149719406695362. Its totient is φ = 49906468898452.

The previous prime is 99812937796889. The next prime is 99812937796937. The reversal of 99812937796906 is 60969773921899.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 99676561954225 + 136375842681 = 9983815^2 + 369291^2 .

It is a Smith number, since the sum of its digits (85) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24953234449225 + ... + 24953234449228.

Almost surely, 2^{99812937796906} is an apocalyptic number.

99812937796906 is a deficient number, since it is larger than the sum of its proper divisors (49906468898456).

99812937796906 is a wasteful number, since it uses less digits than its factorization.

99812937796906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49906468898455.

The product of its (nonzero) digits is 4999796928, while the sum is 85.

The spelling of 99812937796906 in words is "ninety-nine trillion, eight hundred twelve billion, nine hundred thirty-seven million, seven hundred ninety-six thousand, nine hundred six".