20395629898 has 16 divisors (see below), whose sum is σ = 34976329344. Its totient is φ = 8737886160.

The previous prime is 20395629869. The next prime is 20395629901. The reversal of 20395629898 is 89892659302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217038 + ... + 296473.

It is an arithmetic number, because the mean of its divisors is an integer number (2186020584).

Almost surely, 2^20395629898 is an apocalyptic number.

20395629898 is a deficient number, since it is larger than the sum of its proper divisors (14580699446).

20395629898 is a wasteful number, since it uses less digits than its factorization.

20395629898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516357.

The product of its (nonzero) digits is 16796160, while the sum is 61.

The spelling of 20395629898 in words is "twenty billion, three hundred ninety-five million, six hundred twenty-nine thousand, eight hundred ninety-eight".