21152335300355 has 16 divisors (see below), whose sum is σ = 29011766791104. Its totient is φ = 14503033587840.

The previous prime is 21152335300297. The next prime is 21152335300357. The reversal of 21152335300355 is 55300353325112.

It is not a de Polignac number, because 21152335300355 - 2²⁴ = 21152318523139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21152335300357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29324072 + ... + 30036741.

It is an arithmetic number, because the mean of its divisors is an integer number (1813235424444).

Almost surely, 2^{21152335300355} is an apocalyptic number.

21152335300355 is a deficient number, since it is larger than the sum of its proper divisors (7859431490749).

21152335300355 is a wasteful number, since it uses less digits than its factorization.

21152335300355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59371006.

The product of its (nonzero) digits is 202500, while the sum is 38.

Adding to 21152335300355 its reverse (55300353325112), we get a palindrome (76452688625467).

The spelling of 21152335300355 in words is "twenty-one trillion, one hundred fifty-two billion, three hundred thirty-five million, three hundred thousand, three hundred fifty-five".