664550600326575 has 96 divisors (see below), whose sum is σ = 1149138700416000. Its totient is φ = 338235278008320.

The previous prime is 664550600326541. The next prime is 664550600326583. The reversal of 664550600326575 is 575623006055466.

It is not a de Polignac number, because 664550600326575 - 2⁶ = 664550600326511 is a prime.

It is a super-2 number, since 2×664550600326575² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12980238877 + ... + 12980290073.

It is an arithmetic number, because the mean of its divisors is an integer number (11970194796000).

Almost surely, 2^{664550600326575} is an apocalyptic number.

664550600326575 is a deficient number, since it is larger than the sum of its proper divisors (484588100089425).

664550600326575 is a wasteful number, since it uses less digits than its factorization.

664550600326575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68441 (or 68436 counting only the distinct ones).

The product of its (nonzero) digits is 136080000, while the sum is 60.

The spelling of 664550600326575 in words is "six hundred sixty-four trillion, five hundred fifty billion, six hundred million, three hundred twenty-six thousand, five hundred seventy-five".