10172182050721 has 4 divisors (see below), whose sum is σ = 10277049907012. Its totient is φ = 10067314194432.

The previous prime is 10172182050677. The next prime is 10172182050743. The reversal of 10172182050721 is 12705028127101.

It is a happy number.

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 1490254977600 + 8681927073121 = 1220760^2 + 2946511^2 .

It is a cyclic number.

It is not a de Polignac number, because 10172182050721 - 2⁷ = 10172182050593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10172182053721) 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, 52433928000 + ... + 52433928193.

It is an arithmetic number, because the mean of its divisors is an integer number (2569262476753).

Almost surely, 2^{10172182050721} is an apocalyptic number.

It is an amenable number.

10172182050721 is a deficient number, since it is larger than the sum of its proper divisors (104867856291).

10172182050721 is an equidigital number, since it uses as much as digits as its factorization.

10172182050721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104867856290.

The product of its (nonzero) digits is 15680, while the sum is 37.

The spelling of 10172182050721 in words is "ten trillion, one hundred seventy-two billion, one hundred eighty-two million, fifty thousand, seven hundred twenty-one".