20540730160 has 40 divisors (see below), whose sum is σ = 49404003120. Its totient is φ = 7932970752.

The previous prime is 20540730139. The next prime is 20540730167. The reversal of 20540730160 is 6103704502.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (20540730167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4424562 + ... + 4429201.

It is an arithmetic number, because the mean of its divisors is an integer number (1235100078).

Almost surely, 2^20540730160 is an apocalyptic number.

20540730160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20540730160 is an abundant number, since it is smaller than the sum of its proper divisors (28863272960).

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

20540730160 is a wasteful number, since it uses less digits than its factorization.

20540730160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8853805 (or 8853799 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 20540730160 in words is "twenty billion, five hundred forty million, seven hundred thirty thousand, one hundred sixty".