664210554344 has 16 divisors (see below), whose sum is σ = 1261159281600. Its totient is φ = 327901412592.

The previous prime is 664210554331. The next prime is 664210554347. The reversal of 664210554344 is 443455012466.

It is a junction number, because it is equal to n+sod(n) for n = 664210554295 and 664210554304.

It is not an unprimeable number, because it can be changed into a prime (664210554347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525482402 + ... + 525483665.

It is an arithmetic number, because the mean of its divisors is an integer number (78822455100).

Almost surely, 2^664210554344 is an apocalyptic number.

It is an amenable number.

664210554344 is a deficient number, since it is larger than the sum of its proper divisors (596948727256).

664210554344 is a wasteful number, since it uses less digits than its factorization.

664210554344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050966152 (or 1050966148 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 664210554344 in words is "six hundred sixty-four billion, two hundred ten million, five hundred fifty-four thousand, three hundred forty-four".