94137594217209 has 27 divisors (see below), whose sum is σ = 136168136484367. Its totient is φ = 62670084417600.

The previous prime is 94137594217151. The next prime is 94137594217307. The reversal of 94137594217209 is 90271249573149.

The square root of 94137594217209 is 9702453.

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

94137594217209 is a `hidden beast` number, since 9 + 4 + 1 + 3 + 7 + 594 + 2 + 17 + 20 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16514446057209 + 77623148160000 = 4063797^2 + 8810400^2 .

It is not a de Polignac number, because 94137594217209 - 2¹⁵ = 94137594184441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94137594217409) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25643581444 + ... + 25643585114.

Almost surely, 2^{94137594217209} is an apocalyptic number.

94137594217209 is the 9702453-rd square number.

94137594217209 is the 4851227-th centered octagonal number.

It is an amenable number.

94137594217209 is a deficient number, since it is larger than the sum of its proper divisors (42030542267158).

94137594217209 is an frugal number, since it uses more digits than its factorization.

94137594217209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9110 (or 4555 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 63.

The spelling of 94137594217209 in words is "ninety-four trillion, one hundred thirty-seven billion, five hundred ninety-four million, two hundred seventeen thousand, two hundred nine".