113171875345921 has 4 divisors (see below), whose sum is σ = 129339286109632. Its totient is φ = 97004464582212.

The previous prime is 113171875345819. The next prime is 113171875345931. The reversal of 113171875345921 is 129543578171311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113171875345921 - 2⁹ = 113171875345409 is a prime.

It is a super-2 number, since 2×113171875345921² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113171875345931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8083705381845 + ... + 8083705381858.

It is an arithmetic number, because the mean of its divisors is an integer number (32334821527408).

Almost surely, 2^{113171875345921} is an apocalyptic number.

It is an amenable number.

113171875345921 is a deficient number, since it is larger than the sum of its proper divisors (16167410763711).

113171875345921 is an equidigital number, since it uses as much as digits as its factorization.

113171875345921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16167410763710.

The product of its digits is 6350400, while the sum is 58.

The spelling of 113171875345921 in words is "one hundred thirteen trillion, one hundred seventy-one billion, eight hundred seventy-five million, three hundred forty-five thousand, nine hundred twenty-one".