21140113213432 has 8 divisors (see below), whose sum is σ = 39637712275200. Its totient is φ = 10570056606712.

The previous prime is 21140113213391. The next prime is 21140113213481. The reversal of 21140113213432 is 23431231104112.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 21140113213432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321257075832 + ... + 1321257075847.

It is an arithmetic number, because the mean of its divisors is an integer number (4954714034400).

Almost surely, 2^{21140113213432} is an apocalyptic number.

It is an amenable number.

21140113213432 is a deficient number, since it is larger than the sum of its proper divisors (18497599061768).

21140113213432 is a wasteful number, since it uses less digits than its factorization.

21140113213432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642514151685 (or 2642514151681 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 21140113213432 its reverse (23431231104112), we get a palindrome (44571344317544).

The spelling of 21140113213432 in words is "twenty-one trillion, one hundred forty billion, one hundred thirteen million, two hundred thirteen thousand, four hundred thirty-two".