164662121603 has 16 divisors (see below), whose sum is σ = 191690434560. Its totient is φ = 138517986816.

The previous prime is 164662121593. The next prime is 164662121627. The reversal of 164662121603 is 306121266461.

It is a cyclic number.

It is not a de Polignac number, because 164662121603 - 2¹⁴ = 164662105219 is a prime.

It is a super-2 number, since 2×164662121603² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164662123603) 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, 77726 + ... + 579107.

It is an arithmetic number, because the mean of its divisors is an integer number (11980652160).

Almost surely, 2^164662121603 is an apocalyptic number.

164662121603 is a deficient number, since it is larger than the sum of its proper divisors (27028312957).

164662121603 is an equidigital number, since it uses as much as digits as its factorization.

164662121603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657506.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 164662121603 in words is "one hundred sixty-four billion, six hundred sixty-two million, one hundred twenty-one thousand, six hundred three".