1404241255621 has 2 divisors, whose sum is σ = 1404241255622. Its totient is φ = 1404241255620.

The previous prime is 1404241255619. The next prime is 1404241255673. The reversal of 1404241255621 is 1265521424041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942268197025 + 461973058596 = 970705^2 + 679686^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404241255621 - 2¹ = 1404241255619 is a prime.

Together with 1404241255619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404241255601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702120627810 + 702120627811.

It is an arithmetic number, because the mean of its divisors is an integer number (702120627811).

Almost surely, 2^{1404241255621} is an apocalyptic number.

It is an amenable number.

1404241255621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404241255621 is an equidigital number, since it uses as much as digits as its factorization.

1404241255621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 1404241255621 its reverse (1265521424041), we get a palindrome (2669762679662).

The spelling of 1404241255621 in words is "one trillion, four hundred four billion, two hundred forty-one million, two hundred fifty-five thousand, six hundred twenty-one".