21480709335 has 16 divisors (see below), whose sum is σ = 35554278240. Its totient is φ = 11061330560.

The previous prime is 21480709333. The next prime is 21480709339. The reversal of 21480709335 is 53390708412.

It is not a de Polignac number, because 21480709335 - 2¹ = 21480709333 is a prime.

It is a super-2 number, since 2×21480709335² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21480709333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24690036 + ... + 24690905.

It is an arithmetic number, because the mean of its divisors is an integer number (2222142390).

Almost surely, 2^21480709335 is an apocalyptic number.

21480709335 is a deficient number, since it is larger than the sum of its proper divisors (14073568905).

21480709335 is a wasteful number, since it uses less digits than its factorization.

21480709335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49380978.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 21480709335 in words is "twenty-one billion, four hundred eighty million, seven hundred nine thousand, three hundred thirty-five".