21435093652 has 24 divisors (see below), whose sum is σ = 42886690560. Its totient is φ = 9182932320.

The previous prime is 21435093649. The next prime is 21435093677. The reversal of 21435093652 is 25639053412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72652 + ... + 219427.

It is an arithmetic number, because the mean of its divisors is an integer number (1786945440).

Almost surely, 2^21435093652 is an apocalyptic number.

It is an amenable number.

21435093652 is an abundant number, since it is smaller than the sum of its proper divisors (21451596908).

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

21435093652 is a wasteful number, since it uses less digits than its factorization.

21435093652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294711 (or 294709 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 21435093652 in words is "twenty-one billion, four hundred thirty-five million, ninety-three thousand, six hundred fifty-two".