668162007563 has 4 divisors (see below), whose sum is σ = 668270253168. Its totient is φ = 668053761960.

The previous prime is 668162007553. The next prime is 668162007613. The reversal of 668162007563 is 365700261866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 668162007563 - 2¹⁴ = 668161991179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668162007523) 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, 54113543 + ... + 54125888.

It is an arithmetic number, because the mean of its divisors is an integer number (167067563292).

Almost surely, 2^668162007563 is an apocalyptic number.

668162007563 is a deficient number, since it is larger than the sum of its proper divisors (108245605).

668162007563 is a wasteful number, since it uses less digits than its factorization.

668162007563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108245604.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 668162007563 in words is "six hundred sixty-eight billion, one hundred sixty-two million, seven thousand, five hundred sixty-three".