21140311633430 has 16 divisors (see below), whose sum is σ = 41511884662224. Its totient is φ = 7687386048480.

The previous prime is 21140311633423. The next prime is 21140311633457. The reversal of 21140311633430 is 3433611304112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96092325497 + ... + 96092325716.

It is an arithmetic number, because the mean of its divisors is an integer number (2594492791389).

Almost surely, 2^{21140311633430} is an apocalyptic number.

21140311633430 is a deficient number, since it is larger than the sum of its proper divisors (20371573028794).

21140311633430 is a wasteful number, since it uses less digits than its factorization.

21140311633430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192184651231.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 21140311633430 its reverse (3433611304112), we get a palindrome (24573922937542).

The spelling of 21140311633430 in words is "twenty-one trillion, one hundred forty billion, three hundred eleven million, six hundred thirty-three thousand, four hundred thirty".