16521650010617 has 4 divisors (see below), whose sum is σ = 16873174478976. Its totient is φ = 16170125542260.

The previous prime is 16521650010583. The next prime is 16521650010659. The reversal of 16521650010617 is 71601005612561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16521650010617 - 2¹⁶ = 16521649945081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16521650012617) 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, 175762234109 + ... + 175762234202.

It is an arithmetic number, because the mean of its divisors is an integer number (4218293619744).

Almost surely, 2^{16521650010617} is an apocalyptic number.

It is an amenable number.

16521650010617 is a deficient number, since it is larger than the sum of its proper divisors (351524468359).

16521650010617 is an equidigital number, since it uses as much as digits as its factorization.

16521650010617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351524468358.

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 16521650010617 in words is "sixteen trillion, five hundred twenty-one billion, six hundred fifty million, ten thousand, six hundred seventeen".