21152165036635 has 8 divisors (see below), whose sum is σ = 26875692046656. Its totient is φ = 15926336027520.

The previous prime is 21152165036603. The next prime is 21152165036641. The reversal of 21152165036635 is 53663056125112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21152165036635 - 2⁵ = 21152165036603 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 124424500131 + ... + 124424500300.

It is an arithmetic number, because the mean of its divisors is an integer number (3359461505832).

Almost surely, 2^{21152165036635} is an apocalyptic number.

21152165036635 is a deficient number, since it is larger than the sum of its proper divisors (5723527010021).

21152165036635 is a wasteful number, since it uses less digits than its factorization.

21152165036635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248849000453.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 21152165036635 in words is "twenty-one trillion, one hundred fifty-two billion, one hundred sixty-five million, thirty-six thousand, six hundred thirty-five".