1553908343441 has 2 divisors, whose sum is σ = 1553908343442. Its totient is φ = 1553908343440.

The previous prime is 1553908343359. The next prime is 1553908343549. The reversal of 1553908343441 is 1443438093551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1460039639041 + 93868704400 = 1208321^2 + 306380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553908343441 - 2¹⁴ = 1553908327057 is a prime.

It is a super-2 number, since 2×1553908343441² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1553908343441.

It is not a weakly prime, because it can be changed into another prime (1553908343041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776954171720 + 776954171721.

It is an arithmetic number, because the mean of its divisors is an integer number (776954171721).

Almost surely, 2^{1553908343441} is an apocalyptic number.

It is an amenable number.

1553908343441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553908343441 is an equidigital number, since it uses as much as digits as its factorization.

1553908343441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 1553908343441 in words is "one trillion, five hundred fifty-three billion, nine hundred eight million, three hundred forty-three thousand, four hundred forty-one".