21445500234311 has 8 divisors (see below), whose sum is σ = 22759441365024. Its totient is φ = 20137385894400.

The previous prime is 21445500234259. The next prime is 21445500234409. The reversal of 21445500234311 is 11343200554412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21445500234311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21445500234811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456690115 + ... + 1456704836.

It is an arithmetic number, because the mean of its divisors is an integer number (2844930170628).

Almost surely, 2^{21445500234311} is an apocalyptic number.

21445500234311 is a deficient number, since it is larger than the sum of its proper divisors (1313941130713).

21445500234311 is a wasteful number, since it uses less digits than its factorization.

21445500234311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913395401.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 21445500234311 its reverse (11343200554412), we get a palindrome (32788700788723).

The spelling of 21445500234311 in words is "twenty-one trillion, four hundred forty-five billion, five hundred million, two hundred thirty-four thousand, three hundred eleven".