20249985195 has 48 divisors (see below), whose sum is σ = 38862450432. Its totient is φ = 9671618880.

The previous prime is 20249985187. The next prime is 20249985247. The reversal of 20249985195 is 59158994202.

It is not a de Polignac number, because 20249985195 - 2³ = 20249985187 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 272127 + ... + 338456.

It is an arithmetic number, because the mean of its divisors is an integer number (809634384).

Almost surely, 2^20249985195 is an apocalyptic number.

20249985195 is a deficient number, since it is larger than the sum of its proper divisors (18612465237).

20249985195 is a wasteful number, since it uses less digits than its factorization.

20249985195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610672 (or 610669 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The spelling of 20249985195 in words is "twenty billion, two hundred forty-nine million, nine hundred eighty-five thousand, one hundred ninety-five".