20372314517 has 8 divisors (see below), whose sum is σ = 20597377752. Its totient is φ = 20147558400.

The previous prime is 20372314513. The next prime is 20372314519. The reversal of 20372314517 is 71541327302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1016270641 + 19356043876 = 31879^2 + 139126^2 .

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 20372314517 - 2² = 20372314513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372314513) 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, 57917 + ... + 209997.

It is an arithmetic number, because the mean of its divisors is an integer number (2574672219).

Almost surely, 2^20372314517 is an apocalyptic number.

It is an amenable number.

20372314517 is a deficient number, since it is larger than the sum of its proper divisors (225063235).

20372314517 is a wasteful number, since it uses less digits than its factorization.

20372314517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153559.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 20372314517 in words is "twenty billion, three hundred seventy-two million, three hundred fourteen thousand, five hundred seventeen".