99742024799 has 4 divisors (see below), whose sum is σ = 99799119864. Its totient is φ = 99684929736.

The previous prime is 99742024777. The next prime is 99742024817.

99742024799 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99742024799 is a prime.

It is a super-2 number, since 2×99742024799² (a number of 23 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 (99742024399) 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, 28544912 + ... + 28548405.

It is an arithmetic number, because the mean of its divisors is an integer number (24949779966).

Almost surely, 2^99742024799 is an apocalyptic number.

99742024799 is a deficient number, since it is larger than the sum of its proper divisors (57095065).

99742024799 is a wasteful number, since it uses less digits than its factorization.

99742024799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57095064.

The product of its (nonzero) digits is 20575296, while the sum is 62.

The spelling of 99742024799 in words is "ninety-nine billion, seven hundred forty-two million, twenty-four thousand, seven hundred ninety-nine".