20648825898 has 32 divisors (see below), whose sum is σ = 42792026112. Its totient is φ = 6635569200.

The previous prime is 20648825881. The next prime is 20648825903. The reversal of 20648825898 is 89852884602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162138 + ... + 259973.

It is an arithmetic number, because the mean of its divisors is an integer number (1337250816).

Almost surely, 2^20648825898 is an apocalyptic number.

20648825898 is an abundant number, since it is smaller than the sum of its proper divisors (22143200214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20648825898 is a wasteful number, since it uses less digits than its factorization.

20648825898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422410.

The product of its (nonzero) digits is 17694720, while the sum is 60.

The spelling of 20648825898 in words is "twenty billion, six hundred forty-eight million, eight hundred twenty-five thousand, eight hundred ninety-eight".