21735836153 has 4 divisors (see below), whose sum is σ = 22198300800. Its totient is φ = 21273371508.

The previous prime is 21735836141. The next prime is 21735836167. The reversal of 21735836153 is 35163853712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21735836153 - 2¹⁴ = 21735819769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21735836653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231232253 + ... + 231232346.

It is an arithmetic number, because the mean of its divisors is an integer number (5549575200).

Almost surely, 2^21735836153 is an apocalyptic number.

It is an amenable number.

21735836153 is a deficient number, since it is larger than the sum of its proper divisors (462464647).

21735836153 is an equidigital number, since it uses as much as digits as its factorization.

21735836153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462464646.

The product of its digits is 453600, while the sum is 44.

The spelling of 21735836153 in words is "twenty-one billion, seven hundred thirty-five million, eight hundred thirty-six thousand, one hundred fifty-three".