426633221461 has 4 divisors (see below), whose sum is σ = 426842460000. Its totient is φ = 426423982924.

The previous prime is 426633221429. The next prime is 426633221471. The reversal of 426633221461 is 164122336624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 426633221461 - 2⁵ = 426633221429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426633221471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104616211 + ... + 104620288.

It is an arithmetic number, because the mean of its divisors is an integer number (106710615000).

Almost surely, 2^426633221461 is an apocalyptic number.

It is an amenable number.

426633221461 is a deficient number, since it is larger than the sum of its proper divisors (209238539).

426633221461 is a wasteful number, since it uses less digits than its factorization.

426633221461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209238538.

The product of its digits is 248832, while the sum is 40.

The spelling of 426633221461 in words is "four hundred twenty-six billion, six hundred thirty-three million, two hundred twenty-one thousand, four hundred sixty-one".