20512427315 has 16 divisors (see below), whose sum is σ = 24959577216. Its totient is φ = 16180300800.

The previous prime is 20512427297. The next prime is 20512427321. The reversal of 20512427315 is 51372421502.

It is not a de Polignac number, because 20512427315 - 2⁶ = 20512427251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1669595 + ... + 1681835.

It is an arithmetic number, because the mean of its divisors is an integer number (1559973576).

Almost surely, 2^20512427315 is an apocalyptic number.

20512427315 is a deficient number, since it is larger than the sum of its proper divisors (4447149901).

20512427315 is a wasteful number, since it uses less digits than its factorization.

20512427315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16910.

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 20512427315 its reverse (51372421502), we get a palindrome (71884848817).

The spelling of 20512427315 in words is "twenty billion, five hundred twelve million, four hundred twenty-seven thousand, three hundred fifteen".