426453429206421 has 24 divisors (see below), whose sum is σ = 632571319560960. Its totient is φ = 276749952242400.

The previous prime is 426453429206317. The next prime is 426453429206461. The reversal of 426453429206421 is 124602924354624.

426453429206421 is a `hidden beast` number, since 4 + 2 + 6 + 4 + 5 + 3 + 4 + 2 + 9 + 206 + 421 = 666.

It is not a de Polignac number, because 426453429206421 - 2¹⁹ = 426453428682133 is a prime.

It is a super-3 number, since 3×426453429206421³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426453429206461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4223849890 + ... + 4223950851.

It is an arithmetic number, because the mean of its divisors is an integer number (26357138315040).

Almost surely, 2^{426453429206421} is an apocalyptic number.

It is an amenable number.

426453429206421 is a deficient number, since it is larger than the sum of its proper divisors (206117890354539).

426453429206421 is a wasteful number, since it uses less digits than its factorization.

426453429206421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447800897 (or 8447800894 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 54.

The spelling of 426453429206421 in words is "four hundred twenty-six trillion, four hundred fifty-three billion, four hundred twenty-nine million, two hundred six thousand, four hundred twenty-one".