21140534041345 has 8 divisors (see below), whose sum is σ = 25458282691776. Its totient is φ = 16852666004976.

The previous prime is 21140534041339. The next prime is 21140534041351. The reversal of 21140534041345 is 54314043504112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21140534041339) and next prime (21140534041351).

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 21140534041345 - 2⁵ = 21140534041313 is a prime.

It is a Duffinian 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, 7470151957 + ... + 7470154786.

It is an arithmetic number, because the mean of its divisors is an integer number (3182285336472).

Almost surely, 2^{21140534041345} is an apocalyptic number.

It is an amenable number.

21140534041345 is a deficient number, since it is larger than the sum of its proper divisors (4317748650431).

21140534041345 is a wasteful number, since it uses less digits than its factorization.

21140534041345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14940307031.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 21140534041345 its reverse (54314043504112), we get a palindrome (75454577545457).

The spelling of 21140534041345 in words is "twenty-one trillion, one hundred forty billion, five hundred thirty-four million, forty-one thousand, three hundred forty-five".