20321067140 has 24 divisors (see below), whose sum is σ = 46553717952. Its totient is φ = 7389478880.

The previous prime is 20321067139. The next prime is 20321067161. The reversal of 20321067140 is 4176012302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46184024 + ... + 46184463.

It is an arithmetic number, because the mean of its divisors is an integer number (1939738248).

Almost surely, 2^20321067140 is an apocalyptic number.

20321067140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321067140 is an abundant number, since it is smaller than the sum of its proper divisors (26232650812).

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

20321067140 is a wasteful number, since it uses less digits than its factorization.

20321067140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92368507 (or 92368505 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 20321067140 its reverse (4176012302), we get a palindrome (24497079442).

The spelling of 20321067140 in words is "twenty billion, three hundred twenty-one million, sixty-seven thousand, one hundred forty".