10515155166121 has 8 divisors (see below), whose sum is σ = 10561522958280. Its totient is φ = 10468791288192.

The previous prime is 10515155166083. The next prime is 10515155166143. The reversal of 10515155166121 is 12166155151501.

It can be written as a sum of positive squares in 4 ways, for example, as 1641691251225 + 8873463914896 = 1281285^2 + 2978836^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10515155166121 - 2³³ = 10506565231529 is a prime.

It is a super-2 number, since 2×10515155166121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10515155166521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4472871 + ... + 6406003.

It is an arithmetic number, because the mean of its divisors is an integer number (1320190369785).

Almost surely, 2^{10515155166121} is an apocalyptic number.

It is an amenable number.

10515155166121 is a deficient number, since it is larger than the sum of its proper divisors (46367792159).

10515155166121 is a wasteful number, since it uses less digits than its factorization.

10515155166121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957115.

The product of its (nonzero) digits is 45000, while the sum is 40.

The spelling of 10515155166121 in words is "ten trillion, five hundred fifteen billion, one hundred fifty-five million, one hundred sixty-six thousand, one hundred twenty-one".