94100728505809 has 9 divisors (see below), whose sum is σ = 94299084715017. Its totient is φ = 93902788721844.

The previous prime is 94100728505801. The next prime is 94100728505843. The reversal of 94100728505809 is 90850582700149.

The square root of 94100728505809 is 9700553.

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

It is not a de Polignac number, because 94100728505809 - 2³ = 94100728505801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94100728505801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4724159352 + ... + 4724179270.

Almost surely, 2^{94100728505809} is an apocalyptic number.

94100728505809 is the 9700553-rd square number.

94100728505809 is the 4850277-th centered octagonal number.

It is an amenable number.

94100728505809 is a deficient number, since it is larger than the sum of its proper divisors (198356209208).

94100728505809 is an frugal number, since it uses more digits than its factorization.

94100728505809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40812 (or 20406 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 58.

The spelling of 94100728505809 in words is "ninety-four trillion, one hundred billion, seven hundred twenty-eight million, five hundred five thousand, eight hundred nine".