1521205052117 has 8 divisors (see below), whose sum is σ = 1525526995200. Its totient is φ = 1516885573104.

The previous prime is 1521205052077. The next prime is 1521205052141. The reversal of 1521205052117 is 7112505021251.

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 1521205052117 - 2¹⁴ = 1521205035733 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 (1521205052617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623984 + ... + 1852502.

It is an arithmetic number, because the mean of its divisors is an integer number (190690874400).

Almost surely, 2^{1521205052117} is an apocalyptic number.

It is an amenable number.

1521205052117 is a deficient number, since it is larger than the sum of its proper divisors (4321943083).

1521205052117 is a wasteful number, since it uses less digits than its factorization.

1521205052117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232035.

The product of its (nonzero) digits is 7000, while the sum is 32.

The spelling of 1521205052117 in words is "one trillion, five hundred twenty-one billion, two hundred five million, fifty-two thousand, one hundred seventeen".