20354334061665 has 16 divisors (see below), whose sum is σ = 32622414810048. Its totient is φ = 10837151395776.

The previous prime is 20354334061619. The next prime is 20354334061673. The reversal of 20354334061665 is 56616043345302.

It is not a de Polignac number, because 20354334061665 - 2¹² = 20354334057569 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1155830722 + ... + 1155848331.

It is an arithmetic number, because the mean of its divisors is an integer number (2038900925628).

Almost surely, 2^{20354334061665} is an apocalyptic number.

It is an amenable number.

20354334061665 is a deficient number, since it is larger than the sum of its proper divisors (12268080748383).

20354334061665 is a wasteful number, since it uses less digits than its factorization.

20354334061665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311679648.

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 20354334061665 in words is "twenty trillion, three hundred fifty-four billion, three hundred thirty-four million, sixty-one thousand, six hundred sixty-five".