10172325300721 has 4 divisors (see below), whose sum is σ = 10770697377252. Its totient is φ = 9573953224192.

The previous prime is 10172325300611. The next prime is 10172325300727. The reversal of 10172325300721 is 12700352327101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7186479539121 + 2985845761600 = 2680761^2 + 1727960^2 .

It is a cyclic number.

It is not a de Polignac number, because 10172325300721 - 2⁷ = 10172325300593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10172325300727) 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, 299186038240 + ... + 299186038273.

It is an arithmetic number, because the mean of its divisors is an integer number (2692674344313).

Almost surely, 2^{10172325300721} is an apocalyptic number.

It is an amenable number.

10172325300721 is a deficient number, since it is larger than the sum of its proper divisors (598372076531).

10172325300721 is an equidigital number, since it uses as much as digits as its factorization.

10172325300721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598372076530.

The product of its (nonzero) digits is 17640, while the sum is 34.

Adding to 10172325300721 its reverse (12700352327101), we get a palindrome (22872677627822).

The spelling of 10172325300721 in words is "ten trillion, one hundred seventy-two billion, three hundred twenty-five million, three hundred thousand, seven hundred twenty-one".