99209548239201 has 45 divisors (see below), whose sum is σ = 150112353306531. Its totient is φ = 65297825981856.

The previous prime is 99209548239181. The next prime is 99209548239271. The reversal of 99209548239201 is 10293284590299.

The square root of 99209548239201 is 9960399.

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

99209548239201 is a `hidden beast` number, since 99 + 20 + 95 + 4 + 8 + 239 + 201 = 666.

It can be written as a sum of positive squares in only one way, i.e., 78243772493601 + 20965775745600 = 8845551^2 + 4578840^2 .

It is not a de Polignac number, because 99209548239201 - 2⁵ = 99209548239169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99209548239271) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 7081836685 + ... + 7081850693.

Almost surely, 2^{99209548239201} is an apocalyptic number.

99209548239201 is the 9960399-th square number.

99209548239201 is the 4980200-th centered octagonal number.

It is an amenable number.

99209548239201 is a deficient number, since it is larger than the sum of its proper divisors (50902805067330).

99209548239201 is an frugal number, since it uses more digits than its factorization.

99209548239201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28188 (or 14091 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 99209548239201 in words is "ninety-nine trillion, two hundred nine billion, five hundred forty-eight million, two hundred thirty-nine thousand, two hundred one".