20395396250 has 20 divisors (see below), whose sum is σ = 38229133074. Its totient is φ = 8158158000.

The previous prime is 20395396201. The next prime is 20395396253. The reversal of 20395396250 is 5269359302.

It can be written as a sum of positive squares in 5 ways, for example, as 162894169 + 20232502081 = 12763^2 + 142241^2 .

It is not an unprimeable number, because it can be changed into a prime (20395396253) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8156909 + ... + 8159408.

Almost surely, 2^20395396250 is an apocalyptic number.

20395396250 is a deficient number, since it is larger than the sum of its proper divisors (17833736824).

20395396250 is an equidigital number, since it uses as much as digits as its factorization.

20395396250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16316339 (or 16316324 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 44.

The spelling of 20395396250 in words is "twenty billion, three hundred ninety-five million, three hundred ninety-six thousand, two hundred fifty".