20337395840 has 64 divisors (see below), whose sum is σ = 49073636160. Its totient is φ = 8058903552.

The previous prime is 20337395801. The next prime is 20337395863. The reversal of 20337395840 is 4859373302.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 20337395791 and 20337395800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80012 + ... + 216971.

It is an arithmetic number, because the mean of its divisors is an integer number (766775565).

Almost surely, 2^20337395840 is an apocalyptic number.

20337395840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20337395840 is an abundant number, since it is smaller than the sum of its proper divisors (28736240320).

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

20337395840 is a wasteful number, since it uses less digits than its factorization.

20337395840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297109 (or 297097 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 20337395840 in words is "twenty billion, three hundred thirty-seven million, three hundred ninety-five thousand, eight hundred forty".