664612160064412 has 48 divisors (see below), whose sum is σ = 1365555384813312. Its totient is φ = 277101335952000.

The previous prime is 664612160064343. The next prime is 664612160064449. The reversal of 664612160064412 is 214460061216466.

It is a happy number.

It is a congruent number.

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, 1099306273 + ... + 1099910680.

It is an arithmetic number, because the mean of its divisors is an integer number (28449070516944).

Almost surely, 2^{664612160064412} is an apocalyptic number.

It is an amenable number.

664612160064412 is an abundant number, since it is smaller than the sum of its proper divisors (700943224748900).

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

664612160064412 is a wasteful number, since it uses less digits than its factorization.

664612160064412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199217258 (or 2199217256 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 49.

The spelling of 664612160064412 in words is "six hundred sixty-four trillion, six hundred twelve billion, one hundred sixty million, sixty-four thousand, four hundred twelve".