10215767257117 has 4 divisors (see below), whose sum is σ = 10227743538460. Its totient is φ = 10203790975776.

The previous prime is 10215767257093. The next prime is 10215767257127. The reversal of 10215767257117 is 71175276751201.

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 5962318869796 + 4253448387321 = 2441786^2 + 2062389^2 .

It is a cyclic number.

It is not a de Polignac number, because 10215767257117 - 2³⁵ = 10181407518749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10215767257127) 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, 5988139392 + ... + 5988141097.

It is an arithmetic number, because the mean of its divisors is an integer number (2556935884615).

Almost surely, 2^{10215767257117} is an apocalyptic number.

It is an amenable number.

10215767257117 is a deficient number, since it is larger than the sum of its proper divisors (11976281343).

10215767257117 is an equidigital number, since it uses as much as digits as its factorization.

10215767257117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11976281342.

The product of its (nonzero) digits is 1440600, while the sum is 52.

The spelling of 10215767257117 in words is "ten trillion, two hundred fifteen billion, seven hundred sixty-seven million, two hundred fifty-seven thousand, one hundred seventeen".