667420453624 has 32 divisors (see below), whose sum is σ = 1317358828800. Its totient is φ = 316126942560.

The previous prime is 667420453589. The next prime is 667420453649. The reversal of 667420453624 is 426354024766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2491699 + ... + 2746525.

It is an arithmetic number, because the mean of its divisors is an integer number (41167463400).

Almost surely, 2^667420453624 is an apocalyptic number.

It is an amenable number.

667420453624 is a deficient number, since it is larger than the sum of its proper divisors (649938375176).

667420453624 is a wasteful number, since it uses less digits than its factorization.

667420453624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272083 (or 272079 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 49.

The spelling of 667420453624 in words is "six hundred sixty-seven billion, four hundred twenty million, four hundred fifty-three thousand, six hundred twenty-four".