20372017005 has 24 divisors (see below), whose sum is σ = 36529136280. Its totient is φ = 10490417280.

The previous prime is 20372016971. The next prime is 20372017021. The reversal of 20372017005 is 50071027302.

It can be written as a sum of positive squares in 4 ways, for example, as 4606201161 + 15765815844 = 67869^2 + 125562^2 .

It is not a de Polignac number, because 20372017005 - 2⁹ = 20372016493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20372017005.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 7804066 + ... + 7806675.

It is an arithmetic number, because the mean of its divisors is an integer number (1522047345).

Almost surely, 2^20372017005 is an apocalyptic number.

It is an amenable number.

20372017005 is a deficient number, since it is larger than the sum of its proper divisors (16157119275).

20372017005 is a wasteful number, since it uses less digits than its factorization.

20372017005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15610781 (or 15610778 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The spelling of 20372017005 in words is "twenty billion, three hundred seventy-two million, seventeen thousand, five".