20516331314 has 8 divisors (see below), whose sum is σ = 30775189788. Its totient is φ = 10257934720.

The previous prime is 20516331287. The next prime is 20516331343. The reversal of 20516331314 is 41313361502.

It can be written as a sum of positive squares in 2 ways, for example, as 19167018025 + 1349313289 = 138445^2 + 36733^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×20516331314³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34574 + ... + 205494.

Almost surely, 2^20516331314 is an apocalyptic number.

20516331314 is a deficient number, since it is larger than the sum of its proper divisors (10258858474).

20516331314 is a wasteful number, since it uses less digits than its factorization.

20516331314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230940.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 20516331314 its reverse (41313361502), we get a palindrome (61829692816).

The spelling of 20516331314 in words is "twenty billion, five hundred sixteen million, three hundred thirty-one thousand, three hundred fourteen".