1552450405439 has 2 divisors, whose sum is σ = 1552450405440. Its totient is φ = 1552450405438.

The previous prime is 1552450405427. The next prime is 1552450405523. The reversal of 1552450405439 is 9345040542551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1552450405439 - 2¹⁶ = 1552450339903 is a prime.

It is a super-2 number, since 2×1552450405439² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1552450405393 and 1552450405402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1552450405409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776225202719 + 776225202720.

It is an arithmetic number, because the mean of its divisors is an integer number (776225202720).

Almost surely, 2^{1552450405439} is an apocalyptic number.

1552450405439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552450405439 is an equidigital number, since it uses as much as digits as its factorization.

1552450405439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 1552450405439 in words is "one trillion, five hundred fifty-two billion, four hundred fifty million, four hundred five thousand, four hundred thirty-nine".