20345357896 has 16 divisors (see below), whose sum is σ = 38156202540. Its totient is φ = 10170370560.

The previous prime is 20345357891. The next prime is 20345357899. The reversal of 20345357896 is 69875354302.

It can be written as a sum of positive squares in 2 ways, for example, as 20338752996 + 6604900 = 142614^2 + 2570^2 .

It is not an unprimeable number, because it can be changed into a prime (20345357891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250801 + ... + 321856.

Almost surely, 2^20345357896 is an apocalyptic number.

It is an amenable number.

20345357896 is a deficient number, since it is larger than the sum of its proper divisors (17810844644).

20345357896 is a wasteful number, since it uses less digits than its factorization.

20345357896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577104 (or 577100 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 20345357896 in words is "twenty billion, three hundred forty-five million, three hundred fifty-seven thousand, eight hundred ninety-six".