16564713023261 has 8 divisors (see below), whose sum is σ = 17847108494880. Its totient is φ = 15283487091312.

The previous prime is 16564713023239. The next prime is 16564713023269. The reversal of 16564713023261 is 16232031746561.

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 16564713023261 - 2⁶ = 16564713023197 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 (16564713023269) 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, 292355495 + ... + 292412148.

It is an arithmetic number, because the mean of its divisors is an integer number (2230888561860).

Almost surely, 2^{16564713023261} is an apocalyptic number.

It is an amenable number.

16564713023261 is a deficient number, since it is larger than the sum of its proper divisors (1282395471619).

16564713023261 is a wasteful number, since it uses less digits than its factorization.

16564713023261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584769835.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 16564713023261 in words is "sixteen trillion, five hundred sixty-four billion, seven hundred thirteen million, twenty-three thousand, two hundred sixty-one".