20500514321 has 16 divisors (see below), whose sum is σ = 24426382464. Its totient is φ = 16839373824.

The previous prime is 20500514311. The next prime is 20500514383. The reversal of 20500514321 is 12341500502.

It is a de Polignac number, because none of the positive numbers 2^k-20500514321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20500514311) 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, 626576 + ... + 658481.

It is an arithmetic number, because the mean of its divisors is an integer number (1526648904).

Almost surely, 2^20500514321 is an apocalyptic number.

It is an amenable number.

20500514321 is a deficient number, since it is larger than the sum of its proper divisors (3925868143).

20500514321 is a wasteful number, since it uses less digits than its factorization.

20500514321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285160.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 20500514321 in words is "twenty billion, five hundred million, five hundred fourteen thousand, three hundred twenty-one".