16507012056217 has 4 divisors (see below), whose sum is σ = 16517439734400. Its totient is φ = 16496584378036.

The previous prime is 16507012056173. The next prime is 16507012056229. The reversal of 16507012056217 is 71265021070561.

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 16507012056217 - 2³⁹ = 15957256242329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16507012059217) 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, 5213836717 + ... + 5213839882.

It is an arithmetic number, because the mean of its divisors is an integer number (4129359933600).

Almost surely, 2^{16507012056217} is an apocalyptic number.

It is an amenable number.

16507012056217 is a deficient number, since it is larger than the sum of its proper divisors (10427678183).

16507012056217 is a wasteful number, since it uses less digits than its factorization.

16507012056217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10427678182.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 16507012056217 in words is "sixteen trillion, five hundred seven billion, twelve million, fifty-six thousand, two hundred seventeen".