669202049254 has 8 divisors (see below), whose sum is σ = 1004856385320. Its totient is φ = 334249920816.

The previous prime is 669202049209. The next prime is 669202049281. The reversal of 669202049254 is 452940202966.

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

It is a junction number, because it is equal to n+sod(n) for n = 669202049198 and 669202049207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175549524 + ... + 175553335.

It is an arithmetic number, because the mean of its divisors is an integer number (125607048165).

Almost surely, 2^669202049254 is an apocalyptic number.

669202049254 is a deficient number, since it is larger than the sum of its proper divisors (335654336066).

669202049254 is a wasteful number, since it uses less digits than its factorization.

669202049254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351103814.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 669202049254 in words is "six hundred sixty-nine billion, two hundred two million, forty-nine thousand, two hundred fifty-four".