20164443625005 has 16 divisors (see below), whose sum is σ = 32476772782464. Its totient is φ = 10683148939200.

The previous prime is 20164443625003. The next prime is 20164443625031. The reversal of 20164443625005 is 50052634446102.

It is a happy number.

It is not a de Polignac number, because 20164443625005 - 2¹ = 20164443625003 is a prime.

It is a super-2 number, since 2×20164443625005² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20164443625003) 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, 4451309794 + ... + 4451314323.

It is an arithmetic number, because the mean of its divisors is an integer number (2029798298904).

Almost surely, 2^{20164443625005} is an apocalyptic number.

It is an amenable number.

20164443625005 is a deficient number, since it is larger than the sum of its proper divisors (12312329157459).

20164443625005 is a wasteful number, since it uses less digits than its factorization.

20164443625005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8902624276.

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 20164443625005 in words is "twenty trillion, one hundred sixty-four billion, four hundred forty-three million, six hundred twenty-five thousand, five".