21454525503311 has 8 divisors (see below), whose sum is σ = 21860420663520. Its totient is φ = 21048670816992.

The previous prime is 21454525503253. The next prime is 21454525503331. The reversal of 21454525503311 is 11330552545412.

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

It is a cyclic number.

It is not a de Polignac number, because 21454525503311 - 2³⁰ = 21453451761487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21454525503331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9047216 + ... + 11169653.

It is an arithmetic number, because the mean of its divisors is an integer number (2732552582940).

Almost surely, 2^{21454525503311} is an apocalyptic number.

21454525503311 is a deficient number, since it is larger than the sum of its proper divisors (405895160209).

21454525503311 is a wasteful number, since it uses less digits than its factorization.

21454525503311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20236945.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 21454525503311 in words is "twenty-one trillion, four hundred fifty-four billion, five hundred twenty-five million, five hundred three thousand, three hundred eleven".