1415144213621 has 2 divisors, whose sum is σ = 1415144213622. Its totient is φ = 1415144213620.

The previous prime is 1415144213603. The next prime is 1415144213663. The reversal of 1415144213621 is 1263124415141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1279489011025 + 135655202596 = 1131145^2 + 368314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1415144213621 - 2⁶ = 1415144213557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1415144213671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 707572106810 + 707572106811.

It is an arithmetic number, because the mean of its divisors is an integer number (707572106811).

Almost surely, 2^{1415144213621} is an apocalyptic number.

It is an amenable number.

1415144213621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1415144213621 is an equidigital number, since it uses as much as digits as its factorization.

1415144213621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

Adding to 1415144213621 its reverse (1263124415141), we get a palindrome (2678268628762).

The spelling of 1415144213621 in words is "one trillion, four hundred fifteen billion, one hundred forty-four million, two hundred thirteen thousand, six hundred twenty-one".