21300355867511 has 8 divisors (see below), whose sum is σ = 24359678738304. Its totient is φ = 18245136719160.

The previous prime is 21300355867507. The next prime is 21300355867519. The reversal of 21300355867511 is 11576855300312.

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 21300355867511 - 2² = 21300355867507 is a prime.

It is a super-2 number, since 2×21300355867511² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300355867519) 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, 1025919485 + ... + 1025940246.

It is an arithmetic number, because the mean of its divisors is an integer number (3044959842288).

Almost surely, 2^{21300355867511} is an apocalyptic number.

21300355867511 is a deficient number, since it is larger than the sum of its proper divisors (3059322870793).

21300355867511 is a wasteful number, since it uses less digits than its factorization.

21300355867511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051861221.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 21300355867511 in words is "twenty-one trillion, three hundred billion, three hundred fifty-five million, eight hundred sixty-seven thousand, five hundred eleven".