99288640201 has 9 divisors (see below), whose sum is σ = 100814114541. Its totient is φ = 97785923532.

The previous prime is 99288640183. The next prime is 99288640291. The reversal of 99288640201 is 10204688299.

The square root of 99288640201 is 315101.

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

It is not a de Polignac number, because 99288640201 - 2¹⁵ = 99288607433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99288640291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21109416 + ... + 21114118.

Almost surely, 2^99288640201 is an apocalyptic number.

99288640201 is the 315101-st square number.

99288640201 is the 157551-st centered octagonal number.

It is an amenable number.

99288640201 is a deficient number, since it is larger than the sum of its proper divisors (1525474340).

99288640201 is an frugal number, since it uses more digits than its factorization.

99288640201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540 (or 4770 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

Multiplying 99288640201 by its sum of digits (49), we get a square (4865143369849 = 2205707²).

The spelling of 99288640201 in words is "ninety-nine billion, two hundred eighty-eight million, six hundred forty thousand, two hundred one".