21300557267 has 8 divisors (see below), whose sum is σ = 23803727472. Its totient is φ = 18891846400.

The previous prime is 21300557263. The next prime is 21300557273. The reversal of 21300557267 is 76275500312.

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 21300557267 - 2² = 21300557263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21300557267.

It is not an unprimeable number, because it can be changed into a prime (21300557261) 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, 23614358 + ... + 23615259.

It is an arithmetic number, because the mean of its divisors is an integer number (2975465934).

Almost surely, 2^21300557267 is an apocalyptic number.

21300557267 is a deficient number, since it is larger than the sum of its proper divisors (2503170205).

21300557267 is a wasteful number, since it uses less digits than its factorization.

21300557267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47229669.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 21300557267 in words is "twenty-one billion, three hundred million, five hundred fifty-seven thousand, two hundred sixty-seven".