2421232455561 has 16 divisors (see below), whose sum is σ = 3289373146944. Its totient is φ = 1583626176704.

The previous prime is 2421232455553. The next prime is 2421232455589. The reversal of 2421232455561 is 1655542321242.

It is a cyclic number.

It is not a de Polignac number, because 2421232455561 - 2³ = 2421232455553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2421232405561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3221170 + ... + 3901076.

It is an arithmetic number, because the mean of its divisors is an integer number (205585821684).

Almost surely, 2^{2421232455561} is an apocalyptic number.

It is an amenable number.

2421232455561 is a deficient number, since it is larger than the sum of its proper divisors (868140691383).

2421232455561 is a wasteful number, since it uses less digits than its factorization.

2421232455561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702360.

The product of its digits is 576000, while the sum is 42.

The spelling of 2421232455561 in words is "two trillion, four hundred twenty-one billion, two hundred thirty-two million, four hundred fifty-five thousand, five hundred sixty-one".