99814743681 has 4 divisors (see below), whose sum is σ = 133086324912. Its totient is φ = 66543162452.

The previous prime is 99814743673. The next prime is 99814743713. The reversal of 99814743681 is 18634741899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99814743681 - 2³ = 99814743673 is a prime.

It is a super-2 number, since 2×99814743681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99814743641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16635790611 + ... + 16635790616.

It is an arithmetic number, because the mean of its divisors is an integer number (33271581228).

Almost surely, 2^99814743681 is an apocalyptic number.

It is an amenable number.

99814743681 is a deficient number, since it is larger than the sum of its proper divisors (33271581231).

99814743681 is a wasteful number, since it uses less digits than its factorization.

99814743681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33271581230.

The product of its digits is 10450944, while the sum is 60.

The spelling of 99814743681 in words is "ninety-nine billion, eight hundred fourteen million, seven hundred forty-three thousand, six hundred eighty-one".