20315656005 has 16 divisors (see below), whose sum is σ = 33297856704. Its totient is φ = 10570747520.

The previous prime is 20315656003. The next prime is 20315656051. The reversal of 20315656005 is 50065651302.

It is not a de Polignac number, because 20315656005 - 2¹ = 20315656003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315656003) 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, 16516179 + ... + 16517408.

It is an arithmetic number, because the mean of its divisors is an integer number (2081116044).

Almost surely, 2^20315656005 is an apocalyptic number.

It is an amenable number.

20315656005 is a deficient number, since it is larger than the sum of its proper divisors (12982200699).

20315656005 is a wasteful number, since it uses less digits than its factorization.

20315656005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33033636.

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 20315656005 in words is "twenty billion, three hundred fifteen million, six hundred fifty-six thousand, five".