20137334320 has 20 divisors (see below), whose sum is σ = 46819302480. Its totient is φ = 8054933696.

The previous prime is 20137334297. The next prime is 20137334339. The reversal of 20137334320 is 2343373102.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125858260 + ... + 125858419.

It is an arithmetic number, because the mean of its divisors is an integer number (2340965124).

Almost surely, 2^20137334320 is an apocalyptic number.

20137334320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20137334320 is an abundant number, since it is smaller than the sum of its proper divisors (26681968160).

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

20137334320 is a wasteful number, since it uses less digits than its factorization.

20137334320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251716692 (or 251716686 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 28.

The spelling of 20137334320 in words is "twenty billion, one hundred thirty-seven million, three hundred thirty-four thousand, three hundred twenty".