2123405424481 has 6 divisors (see below), whose sum is σ = 2333991086546. Its totient is φ = 1930368567600.

The previous prime is 2123405424479. The next prime is 2123405424509. The reversal of 2123405424481 is 1844245043212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2104632040225 + 18773384256 = 1450735^2 + 137016^2 .

It is not a de Polignac number, because 2123405424481 - 2¹ = 2123405424479 is a prime.

It is a super-2 number, since 2×2123405424481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123405424461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8774402460 + ... + 8774402701.

Almost surely, 2^{2123405424481} is an apocalyptic number.

It is an amenable number.

2123405424481 is a deficient number, since it is larger than the sum of its proper divisors (210585662065).

2123405424481 is a wasteful number, since it uses less digits than its factorization.

2123405424481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17548805183 (or 17548805172 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 40.

The spelling of 2123405424481 in words is "two trillion, one hundred twenty-three billion, four hundred five million, four hundred twenty-four thousand, four hundred eighty-one".