21435545034 has 24 divisors (see below), whose sum is σ = 46487996100. Its totient is φ = 7138363968.

The previous prime is 21435545017. The next prime is 21435545041. The reversal of 21435545034 is 43054553412.

21435545034 is a `hidden beast` number, since 2 + 143 + 5 + 5 + 4 + 503 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19627169409 + 1808375625 = 140097^2 + 42525^2 .

It is a super-2 number, since 2×21435545034² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21435545034.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548737 + ... + 586500.

Almost surely, 2^21435545034 is an apocalyptic number.

21435545034 is an abundant number, since it is smaller than the sum of its proper divisors (25052451066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21435545034 is a wasteful number, since it uses less digits than its factorization.

21435545034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136294 (or 1136291 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 21435545034 in words is "twenty-one billion, four hundred thirty-five million, five hundred forty-five thousand, thirty-four".