2401665144421 has 2 divisors, whose sum is σ = 2401665144422. Its totient is φ = 2401665144420.

The previous prime is 2401665144413. The next prime is 2401665144443. The reversal of 2401665144421 is 1244415661042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2315220912225 + 86444232196 = 1521585^2 + 294014^2 .

It is a cyclic number.

It is not a de Polignac number, because 2401665144421 - 2³ = 2401665144413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2401665144481) 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 as a sum of consecutive naturals, namely, 1200832572210 + 1200832572211.

It is an arithmetic number, because the mean of its divisors is an integer number (1200832572211).

Almost surely, 2^{2401665144421} is an apocalyptic number.

It is an amenable number.

2401665144421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2401665144421 is an equidigital number, since it uses as much as digits as its factorization.

2401665144421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 2401665144421 in words is "two trillion, four hundred one billion, six hundred sixty-five million, one hundred forty-four thousand, four hundred twenty-one".