20315636005 has 32 divisors (see below), whose sum is σ = 28058494464. Its totient is φ = 13832384256.

The previous prime is 20315635961. The next prime is 20315636009. The reversal of 20315636005 is 50063651302.

It is a cyclic number.

It is not a de Polignac number, because 20315636005 - 2⁷ = 20315635877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315636009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9894559 + ... + 9896611.

It is an arithmetic number, because the mean of its divisors is an integer number (876827952).

Almost surely, 2^20315636005 is an apocalyptic number.

It is an amenable number.

20315636005 is a deficient number, since it is larger than the sum of its proper divisors (7742858459).

20315636005 is a wasteful number, since it uses less digits than its factorization.

20315636005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925.

The product of its (nonzero) digits is 16200, while the sum is 31.

The spelling of 20315636005 in words is "twenty billion, three hundred fifteen million, six hundred thirty-six thousand, five".