20316550647 has 16 divisors (see below), whose sum is σ = 28291131648. Its totient is φ = 12944194560.

The previous prime is 20316550613. The next prime is 20316550651. The reversal of 20316550647 is 74605561302.

It is not a de Polignac number, because 20316550647 - 2⁸ = 20316550391 is a prime.

It is a super-2 number, since 2×20316550647² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20316550607) 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, 48129 + ... + 207242.

It is an arithmetic number, because the mean of its divisors is an integer number (1768195728).

Almost surely, 2^20316550647 is an apocalyptic number.

20316550647 is a deficient number, since it is larger than the sum of its proper divisors (7974581001).

20316550647 is a wasteful number, since it uses less digits than its factorization.

20316550647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256550.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 20316550647 in words is "twenty billion, three hundred sixteen million, five hundred fifty thousand, six hundred forty-seven".