66563423354 has 16 divisors (see below), whose sum is σ = 102714912000. Its totient is φ = 32328123984.

The previous prime is 66563423351. The next prime is 66563423419. The reversal of 66563423354 is 45332436566.

It is a junction number, because it is equal to n+sod(n) for n = 66563423299 and 66563423308.

It is not an unprimeable number, because it can be changed into a prime (66563423351) 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, 706514 + ... + 795165.

It is an arithmetic number, because the mean of its divisors is an integer number (6419682000).

Almost surely, 2^66563423354 is an apocalyptic number.

66563423354 is a deficient number, since it is larger than the sum of its proper divisors (36151488646).

66563423354 is a wasteful number, since it uses less digits than its factorization.

66563423354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502317.

The product of its digits is 4665600, while the sum is 47.

The spelling of 66563423354 in words is "sixty-six billion, five hundred sixty-three million, four hundred twenty-three thousand, three hundred fifty-four".