21434033635 has 32 divisors (see below), whose sum is σ = 29504881152. Its totient is φ = 14642933760.

The previous prime is 21434033629. The next prime is 21434033723. The reversal of 21434033635 is 53633043412.

It is not a de Polignac number, because 21434033635 - 2⁷ = 21434033507 is a prime.

It is a super-2 number, since 2×21434033635² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21434033635.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18589219 + ... + 18590371.

It is an arithmetic number, because the mean of its divisors is an integer number (922027536).

Almost surely, 2^21434033635 is an apocalyptic number.

21434033635 is a deficient number, since it is larger than the sum of its proper divisors (8070847517).

21434033635 is a wasteful number, since it uses less digits than its factorization.

21434033635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683.

The product of its (nonzero) digits is 77760, while the sum is 34.

The spelling of 21434033635 in words is "twenty-one billion, four hundred thirty-four million, thirty-three thousand, six hundred thirty-five".