21849458267 has 32 divisors (see below), whose sum is σ = 28596177792. Its totient is φ = 16200474624.

The previous prime is 21849458251. The next prime is 21849458287. The reversal of 21849458267 is 76285494812.

It is a cyclic number.

It is not a de Polignac number, because 21849458267 - 2⁴ = 21849458251 is a prime.

It is a super-2 number, since 2×21849458267² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21849458207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 330143 + ... + 390759.

It is an arithmetic number, because the mean of its divisors is an integer number (893630556).

Almost surely, 2^21849458267 is an apocalyptic number.

21849458267 is a deficient number, since it is larger than the sum of its proper divisors (6746719525).

21849458267 is a wasteful number, since it uses less digits than its factorization.

21849458267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60887.

The product of its digits is 7741440, while the sum is 56.

The spelling of 21849458267 in words is "twenty-one billion, eight hundred forty-nine million, four hundred fifty-eight thousand, two hundred sixty-seven".