1354258390021 has 2 divisors, whose sum is σ = 1354258390022. Its totient is φ = 1354258390020.

The previous prime is 1354258390007. The next prime is 1354258390031. The reversal of 1354258390021 is 1200938524531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868323921921 + 485934468100 = 931839^2 + 697090^2 .

It is an emirp because it is prime and its reverse (1200938524531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1354258390021 - 2⁵ = 1354258389989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1354258390021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1354258390031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677129195010 + 677129195011.

It is an arithmetic number, because the mean of its divisors is an integer number (677129195011).

Almost surely, 2^{1354258390021} is an apocalyptic number.

It is an amenable number.

1354258390021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354258390021 is an equidigital number, since it uses as much as digits as its factorization.

1354258390021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 1354258390021 in words is "one trillion, three hundred fifty-four billion, two hundred fifty-eight million, three hundred ninety thousand, twenty-one".