21426011464307 has 4 divisors (see below), whose sum is σ = 21426459352200. Its totient is φ = 21425563576416.

The previous prime is 21426011464219. The next prime is 21426011464331. The reversal of 21426011464307 is 70346411062412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21426011464307 - 2²⁰ = 21426010415731 is a prime.

It is a super-2 number, since 2×21426011464307² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21426011464397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223872182 + ... + 223967867.

It is an arithmetic number, because the mean of its divisors is an integer number (5356614838050).

Almost surely, 2^{21426011464307} is an apocalyptic number.

21426011464307 is a deficient number, since it is larger than the sum of its proper divisors (447887893).

21426011464307 is an equidigital number, since it uses as much as digits as its factorization.

21426011464307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447887892.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 21426011464307 in words is "twenty-one trillion, four hundred twenty-six billion, eleven million, four hundred sixty-four thousand, three hundred seven".