664455705232010 has 32 divisors (see below), whose sum is σ = 1266454726053120. Its totient is φ = 250132163905792.

The previous prime is 664455705232009. The next prime is 664455705232087. The reversal of 664455705232010 is 10232507554466.

It is a super-2 number, since 2×664455705232010² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 664455705232010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121267190 + ... + 126627969.

It is an arithmetic number, because the mean of its divisors is an integer number (39576710189160).

Almost surely, 2^{664455705232010} is an apocalyptic number.

664455705232010 is a deficient number, since it is larger than the sum of its proper divisors (601999020821110).

664455705232010 is a wasteful number, since it uses less digits than its factorization.

664455705232010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247910950.

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 664455705232010 in words is "six hundred sixty-four trillion, four hundred fifty-five billion, seven hundred five million, two hundred thirty-two thousand, ten".