21150011265613 has 8 divisors (see below), whose sum is σ = 22585106580480. Its totient is φ = 19761968256240.

The previous prime is 21150011265499. The next prime is 21150011265619. The reversal of 21150011265613 is 31656211005112.

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 21150011265613 - 2¹³ = 21150011257421 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 (21150011265619) 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 7 ways as a sum of consecutive naturals, for example, 11763075445 + ... + 11763077242.

It is an arithmetic number, because the mean of its divisors is an integer number (2823138322560).

Almost surely, 2^{21150011265613} is an apocalyptic number.

It is an amenable number.

21150011265613 is a deficient number, since it is larger than the sum of its proper divisors (1435095314867).

21150011265613 is a wasteful number, since it uses less digits than its factorization.

21150011265613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23526152747.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 21150011265613 in words is "twenty-one trillion, one hundred fifty billion, eleven million, two hundred sixty-five thousand, six hundred thirteen".