99671909550724 has 81 divisors (see below), whose sum is σ = 207985058784111. Its totient is φ = 41672269954560.

The previous prime is 99671909550701. The next prime is 99671909550739. The reversal of 99671909550724 is 42705590917699.

The square root of 99671909550724 is 9983582.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 57453519636100 + 42218389914624 = 7579810^2 + 6497568^2 .

It is a super-2 number, since 2×99671909550724² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5730567372 + ... + 5730584764.

Almost surely, 2^{99671909550724} is an apocalyptic number.

99671909550724 is the 9983582-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99671909550724

99671909550724 is an abundant number, since it is smaller than the sum of its proper divisors (108313149233387).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99671909550724 is an frugal number, since it uses more digits than its factorization.

99671909550724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34886 (or 17443 counting only the distinct ones).

The product of its (nonzero) digits is 385786800, while the sum is 73.

The spelling of 99671909550724 in words is "ninety-nine trillion, six hundred seventy-one billion, nine hundred nine million, five hundred fifty thousand, seven hundred twenty-four".