64666035065630 has 16 divisors (see below), whose sum is σ = 122525119072080. Its totient is φ = 24505023814272.

The previous prime is 64666035065603. The next prime is 64666035065663. The reversal of 64666035065630 is 3656053066646.

It is a super-2 number, since 2×64666035065630² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170173776299 + ... + 170173776678.

It is an arithmetic number, because the mean of its divisors is an integer number (7657819942005).

Almost surely, 2^{64666035065630} is an apocalyptic number.

64666035065630 is a deficient number, since it is larger than the sum of its proper divisors (57859084006450).

64666035065630 is a wasteful number, since it uses less digits than its factorization.

64666035065630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340347553003.

The product of its (nonzero) digits is 41990400, while the sum is 56.

The spelling of 64666035065630 in words is "sixty-four trillion, six hundred sixty-six billion, thirty-five million, sixty-five thousand, six hundred thirty".