561667275505 has 8 divisors (see below), whose sum is σ = 770286549312. Its totient is φ = 385143274608.

The previous prime is 561667275503. The next prime is 561667275577. The reversal of 561667275505 is 505572766165.

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 561667275505 - 2¹ = 561667275503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561667275503) 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, 8023818187 + ... + 8023818256.

It is an arithmetic number, because the mean of its divisors is an integer number (96285818664).

Almost surely, 2^561667275505 is an apocalyptic number.

It is an amenable number.

561667275505 is a deficient number, since it is larger than the sum of its proper divisors (208619273807).

561667275505 is a wasteful number, since it uses less digits than its factorization.

561667275505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16047636455.

The product of its (nonzero) digits is 13230000, while the sum is 55.

The spelling of 561667275505 in words is "five hundred sixty-one billion, six hundred sixty-seven million, two hundred seventy-five thousand, five hundred five".