21235452153303 has 16 divisors (see below), whose sum is σ = 28467509748480. Its totient is φ = 14080355255424.

The previous prime is 21235452153281. The next prime is 21235452153319. The reversal of 21235452153303 is 30335125453212.

It is a de Polignac number, because none of the positive numbers 2^k-21235452153303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21235452153343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21251826 + ... + 22228607.

It is an arithmetic number, because the mean of its divisors is an integer number (1779219359280).

Almost surely, 2^{21235452153303} is an apocalyptic number.

21235452153303 is a deficient number, since it is larger than the sum of its proper divisors (7232057595177).

21235452153303 is a wasteful number, since it uses less digits than its factorization.

21235452153303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43481318.

The product of its (nonzero) digits is 324000, while the sum is 39.

The spelling of 21235452153303 in words is "twenty-one trillion, two hundred thirty-five billion, four hundred fifty-two million, one hundred fifty-three thousand, three hundred three".