354444856553 has 2 divisors, whose sum is σ = 354444856554. Its totient is φ = 354444856552.

The previous prime is 354444856543. The next prime is 354444856621. The reversal of 354444856553 is 355658444453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344202809344 + 10242047209 = 586688^2 + 101203^2 .

It is a cyclic number.

It is not a de Polignac number, because 354444856553 - 2³⁶ = 285725379817 is a prime.

It is not a weakly prime, because it can be changed into another prime (354444856543) 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, 177222428276 + 177222428277.

It is an arithmetic number, because the mean of its divisors is an integer number (177222428277).

Almost surely, 2^354444856553 is an apocalyptic number.

It is an amenable number.

354444856553 is a deficient number, since it is larger than the sum of its proper divisors (1).

354444856553 is an equidigital number, since it uses as much as digits as its factorization.

354444856553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120000, while the sum is 56.

The spelling of 354444856553 in words is "three hundred fifty-four billion, four hundred forty-four million, eight hundred fifty-six thousand, five hundred fifty-three".