99721412799 has 8 divisors (see below), whose sum is σ = 135141586992. Its totient is φ = 65391090240.

The previous prime is 99721412761. The next prime is 99721412831.

99721412799 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99721412799 - 2¹¹ = 99721410751 is a prime.

It is a super-2 number, since 2×99721412799² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99721412759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272462694 + ... + 272463059.

It is an arithmetic number, because the mean of its divisors is an integer number (16892698374).

Almost surely, 2^99721412799 is an apocalyptic number.

99721412799 is a deficient number, since it is larger than the sum of its proper divisors (35420174193).

99721412799 is a wasteful number, since it uses less digits than its factorization.

99721412799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544925817.

The product of its digits is 5143824, while the sum is 60.

The spelling of 99721412799 in words is "ninety-nine billion, seven hundred twenty-one million, four hundred twelve thousand, seven hundred ninety-nine".