20449737396 has 36 divisors (see below), whose sum is σ = 56391701184. Its totient is φ = 6196890000.

The previous prime is 20449737389. The next prime is 20449737401. The reversal of 20449737396 is 69373794402.

20449737396 is a `hidden beast` number, since 204 + 49 + 7 + 3 + 7 + 396 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25819980 + ... + 25820771.

It is an arithmetic number, because the mean of its divisors is an integer number (1566436144).

Almost surely, 2^20449737396 is an apocalyptic number.

It is an amenable number.

20449737396 is an abundant number, since it is smaller than the sum of its proper divisors (35941963788).

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

20449737396 is a wasteful number, since it uses less digits than its factorization.

20449737396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51640772 (or 51640767 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 20449737396 in words is "twenty billion, four hundred forty-nine million, seven hundred thirty-seven thousand, three hundred ninety-six".