20090196648 has 24 divisors (see below), whose sum is σ = 54410949450. Its totient is φ = 6696732192.

The previous prime is 20090196601. The next prime is 20090196661. The reversal of 20090196648 is 84669109002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16276146084 + 3814050564 = 127578^2 + 61758^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139515183 + ... + 139515326.

Almost surely, 2^20090196648 is an apocalyptic number.

It is an amenable number.

20090196648 is an abundant number, since it is smaller than the sum of its proper divisors (34320752802).

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

20090196648 is a wasteful number, since it uses less digits than its factorization.

20090196648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279030521 (or 279030514 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 20090196648 in words is "twenty billion, ninety million, one hundred ninety-six thousand, six hundred forty-eight".