664550007374472 has 64 divisors (see below), whose sum is σ = 1697744631098880. Its totient is φ = 216692191951872.

The previous prime is 664550007374423. The next prime is 664550007374479. The reversal of 664550007374472 is 274473700055466.

It is not an unprimeable number, because it can be changed into a prime (664550007374479) 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 15 ways as a sum of consecutive naturals, for example, 774712248 + ... + 775569575.

It is an arithmetic number, because the mean of its divisors is an integer number (26527259860920).

Almost surely, 2^{664550007374472} is an apocalyptic number.

It is an amenable number.

664550007374472 is an abundant number, since it is smaller than the sum of its proper divisors (1033194623724408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664550007374472 is a wasteful number, since it uses less digits than its factorization.

664550007374472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550282222 (or 1550282218 counting only the distinct ones).

The product of its (nonzero) digits is 118540800, while the sum is 60.

The spelling of 664550007374472 in words is "six hundred sixty-four trillion, five hundred fifty billion, seven million, three hundred seventy-four thousand, four hundred seventy-two".