20512313873 has 8 divisors (see below), whose sum is σ = 21887690400. Its totient is φ = 19166515488.

The previous prime is 20512313863. The next prime is 20512313929. The reversal of 20512313873 is 37831321502.

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

It is a cyclic number.

It is not a de Polignac number, because 20512313873 - 2¹² = 20512309777 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 (20512313863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7393103 + ... + 7395876.

It is an arithmetic number, because the mean of its divisors is an integer number (2735961300).

Almost surely, 2^20512313873 is an apocalyptic number.

It is an amenable number.

20512313873 is a deficient number, since it is larger than the sum of its proper divisors (1375376527).

20512313873 is a wasteful number, since it uses less digits than its factorization.

20512313873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14789071.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 20512313873 in words is "twenty billion, five hundred twelve million, three hundred thirteen thousand, eight hundred seventy-three".