21141240032405 has 8 divisors (see below), whose sum is σ = 26472509258112. Its totient is φ = 16177644546448.

The previous prime is 21141240032351. The next prime is 21141240032441. The reversal of 21141240032405 is 50423004214112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21141240032405 - 2¹² = 21141240028309 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 91918434809 + ... + 91918435038.

It is an arithmetic number, because the mean of its divisors is an integer number (3309063657264).

Almost surely, 2^{21141240032405} is an apocalyptic number.

It is an amenable number.

21141240032405 is a deficient number, since it is larger than the sum of its proper divisors (5331269225707).

21141240032405 is a wasteful number, since it uses less digits than its factorization.

21141240032405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183836869875.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 21141240032405 its reverse (50423004214112), we get a palindrome (71564244246517).

The spelling of 21141240032405 in words is "twenty-one trillion, one hundred forty-one billion, two hundred forty million, thirty-two thousand, four hundred five".