669200421539 has 8 divisors (see below), whose sum is σ = 724703510160. Its totient is φ = 614272494816.

The previous prime is 669200421503. The next prime is 669200421583. The reversal of 669200421539 is 935124002966.

It is a happy number.

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 669200421539 - 2⁸ = 669200421283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 669200421493 and 669200421502.

It is not an unprimeable number, because it can be changed into a prime (669200421739) 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, 143788052 + ... + 143792705.

It is an arithmetic number, because the mean of its divisors is an integer number (90587938770).

Almost surely, 2^669200421539 is an apocalyptic number.

669200421539 is a deficient number, since it is larger than the sum of its proper divisors (55503088621).

669200421539 is a wasteful number, since it uses less digits than its factorization.

669200421539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287580949.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 669200421539 in words is "six hundred sixty-nine billion, two hundred million, four hundred twenty-one thousand, five hundred thirty-nine".