66679550354 has 8 divisors (see below), whose sum is σ = 101389453500. Its totient is φ = 32883065856.

The previous prime is 66679550317. The next prime is 66679550369. The reversal of 66679550354 is 45305597666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66421144729 + 258405625 = 257723^2 + 16075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66679550354.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228354479 + ... + 228354770.

Almost surely, 2^66679550354 is an apocalyptic number.

66679550354 is a deficient number, since it is larger than the sum of its proper divisors (34709903146).

66679550354 is a wasteful number, since it uses less digits than its factorization.

66679550354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456709324.

The product of its (nonzero) digits is 20412000, while the sum is 56.

The spelling of 66679550354 in words is "sixty-six billion, six hundred seventy-nine million, five hundred fifty thousand, three hundred fifty-four".