21435152135 has 16 divisors (see below), whose sum is σ = 26039391840. Its totient is φ = 16936765440.

The previous prime is 21435152107. The next prime is 21435152153. The reversal of 21435152135 is 53125153412.

It is not a de Polignac number, because 21435152135 - 2⁶ = 21435152071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2622455 + ... + 2630615.

It is an arithmetic number, because the mean of its divisors is an integer number (1627461990).

Almost surely, 2^21435152135 is an apocalyptic number.

21435152135 is a deficient number, since it is larger than the sum of its proper divisors (4604239705).

21435152135 is an equidigital number, since it uses as much as digits as its factorization.

21435152135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14578.

The product of its digits is 18000, while the sum is 32.

The spelling of 21435152135 in words is "twenty-one billion, four hundred thirty-five million, one hundred fifty-two thousand, one hundred thirty-five".