99999914805847 has 32 divisors (see below), whose sum is σ = 114957254016000. Its totient is φ = 85211893997568.

The previous prime is 99999914805811. The next prime is 99999914805853. The reversal of 99999914805847 is 74850841999999.

It is a cyclic number.

It is not a de Polignac number, because 99999914805847 - 2¹¹ = 99999914803799 is a prime.

It is a super-2 number, since 2×99999914805847² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999914805547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4022672104 + ... + 4022696962.

It is an arithmetic number, because the mean of its divisors is an integer number (3592414188000).

Almost surely, 2^{99999914805847} is an apocalyptic number.

99999914805847 is a deficient number, since it is larger than the sum of its proper divisors (14957339210153).

99999914805847 is a wasteful number, since it uses less digits than its factorization.

99999914805847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29455.

The product of its (nonzero) digits is 19046845440, while the sum is 91.

The spelling of 99999914805847 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred fourteen million, eight hundred five thousand, eight hundred forty-seven".