21140341140 has 24 divisors (see below), whose sum is σ = 59192955360. Its totient is φ = 5637424288.

The previous prime is 21140341139. The next prime is 21140341151. The reversal of 21140341140 is 4114304112.

It is a congruent number.

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, 176169450 + ... + 176169569.

It is an arithmetic number, because the mean of its divisors is an integer number (2466373140).

Almost surely, 2^21140341140 is an apocalyptic number.

21140341140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21140341140 is an abundant number, since it is smaller than the sum of its proper divisors (38052614220).

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

21140341140 is a wasteful number, since it uses less digits than its factorization.

21140341140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352339031 (or 352339029 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21140341140 its reverse (4114304112), we get a palindrome (25254645252).

The spelling of 21140341140 in words is "twenty-one billion, one hundred forty million, three hundred forty-one thousand, one hundred forty".