1553445501389 has 2 divisors, whose sum is σ = 1553445501390. Its totient is φ = 1553445501388.

The previous prime is 1553445501379. The next prime is 1553445501481. The reversal of 1553445501389 is 9831055443551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209043189225 + 344402312164 = 1099565^2 + 586858^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553445501389 - 2¹⁶ = 1553445435853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1553445501389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553445501359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776722750694 + 776722750695.

It is an arithmetic number, because the mean of its divisors is an integer number (776722750695).

Almost surely, 2^{1553445501389} is an apocalyptic number.

It is an amenable number.

1553445501389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553445501389 is an equidigital number, since it uses as much as digits as its factorization.

1553445501389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480000, while the sum is 53.

The spelling of 1553445501389 in words is "one trillion, five hundred fifty-three billion, four hundred forty-five million, five hundred one thousand, three hundred eighty-nine".