64665570136706 has 48 divisors (see below), whose sum is σ = 125711522543232. Its totient is φ = 24658327360800.

The previous prime is 64665570136679. The next prime is 64665570136747. The reversal of 64665570136706 is 60763107556646.

It is a super-2 number, since 2×64665570136706² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 638104805 + ... + 638206136.

It is an arithmetic number, because the mean of its divisors is an integer number (2618990052984).

Almost surely, 2^{64665570136706} is an apocalyptic number.

64665570136706 is a deficient number, since it is larger than the sum of its proper divisors (61045952406526).

64665570136706 is a wasteful number, since it uses less digits than its factorization.

64665570136706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276311015 (or 1276311008 counting only the distinct ones).

The product of its (nonzero) digits is 114307200, while the sum is 62.

The spelling of 64665570136706 in words is "sixty-four trillion, six hundred sixty-five billion, five hundred seventy million, one hundred thirty-six thousand, seven hundred six".