99990000007943 has 2 divisors, whose sum is σ = 99990000007944. Its totient is φ = 99990000007942.

The previous prime is 99990000007903. The next prime is 99990000007951. The reversal of 99990000007943 is 34970000009999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99990000007943 - 2¹⁶ = 99989999942407 is a prime.

It is a super-2 number, since 2×99990000007943² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99990000007903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49995000003971 + 49995000003972.

It is an arithmetic number, because the mean of its divisors is an integer number (49995000003972).

Almost surely, 2^{99990000007943} is an apocalyptic number.

99990000007943 is a deficient number, since it is larger than the sum of its proper divisors (1).

99990000007943 is an equidigital number, since it uses as much as digits as its factorization.

99990000007943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4960116, while the sum is 59.

The spelling of 99990000007943 in words is "ninety-nine trillion, nine hundred ninety billion, seven thousand, nine hundred forty-three".