1670165656101 has 16 divisors (see below), whose sum is σ = 2505639993600. Its totient is φ = 1099349544384.

The previous prime is 1670165656063. The next prime is 1670165656111. The reversal of 1670165656101 is 1016565610761.

1670165656101 is a `hidden beast` number, since 1 + 6 + 70 + 1 + 6 + 565 + 6 + 10 + 1 = 666.

It is not a de Polignac number, because 1670165656101 - 2⁹ = 1670165655589 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670165656111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391504116 + ... + 391508381.

It is an arithmetic number, because the mean of its divisors is an integer number (156602499600).

Almost surely, 2^{1670165656101} is an apocalyptic number.

It is an amenable number.

1670165656101 is a deficient number, since it is larger than the sum of its proper divisors (835474337499).

1670165656101 is an equidigital number, since it uses as much as digits as its factorization.

1670165656101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783012585 (or 783012579 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 1670165656101 in words is "one trillion, six hundred seventy billion, one hundred sixty-five million, six hundred fifty-six thousand, one hundred one".