354443253561 has 12 divisors (see below), whose sum is σ = 513423943188. Its totient is φ = 235626107904.

The previous prime is 354443253559. The next prime is 354443253623. The reversal of 354443253561 is 165352344453.

354443253561 is a `hidden beast` number, since 3 + 5 + 4 + 4 + 4 + 32 + 53 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 89353166400 + 265090087161 = 298920^2 + 514869^2 .

It is not a de Polignac number, because 354443253561 - 2¹ = 354443253559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (354443253061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55779520 + ... + 55785873.

It is an arithmetic number, because the mean of its divisors is an integer number (42785328599).

Almost surely, 2^354443253561 is an apocalyptic number.

It is an amenable number.

354443253561 is a deficient number, since it is larger than the sum of its proper divisors (158980689627).

354443253561 is a wasteful number, since it uses less digits than its factorization.

354443253561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111565752 (or 111565749 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 45.

The spelling of 354443253561 in words is "three hundred fifty-four billion, four hundred forty-three million, two hundred fifty-three thousand, five hundred sixty-one".