21479850743011 has 2 divisors, whose sum is σ = 21479850743012. Its totient is φ = 21479850743010.

The previous prime is 21479850743009. The next prime is 21479850743119. The reversal of 21479850743011 is 11034705897412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21479850743011 - 2¹ = 21479850743009 is a prime.

It is a super-2 number, since 2×21479850743011² (a number of 27 digits) contains 22 as substring.

Together with 21479850743009, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21479850743011.

It is not a weakly prime, because it can be changed into another prime (21479850740011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10739925371505 + 10739925371506.

It is an arithmetic number, because the mean of its divisors is an integer number (10739925371506).

Almost surely, 2^{21479850743011} is an apocalyptic number.

21479850743011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21479850743011 is an equidigital number, since it uses as much as digits as its factorization.

21479850743011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 21479850743011 in words is "twenty-one trillion, four hundred seventy-nine billion, eight hundred fifty million, seven hundred forty-three thousand, eleven".