664577070551601 has 16 divisors (see below), whose sum is σ = 886633982976000. Its totient is φ = 442785829731408.

The previous prime is 664577070551591. The next prime is 664577070551651. The reversal of 664577070551601 is 106155070775466.

664577070551601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664577070551601 - 2³⁴ = 664559890682417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664577070551651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36420100 + ... + 51532298.

It is an arithmetic number, because the mean of its divisors is an integer number (55414623936000).

Almost surely, 2^{664577070551601} is an apocalyptic number.

It is an amenable number.

664577070551601 is a deficient number, since it is larger than the sum of its proper divisors (222056912424399).

664577070551601 is a wasteful number, since it uses less digits than its factorization.

664577070551601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15120988.

The product of its (nonzero) digits is 37044000, while the sum is 60.

The spelling of 664577070551601 in words is "six hundred sixty-four trillion, five hundred seventy-seven billion, seventy million, five hundred fifty-one thousand, six hundred one".