354643331641 has 4 divisors (see below), whose sum is σ = 354657343012. Its totient is φ = 354629320272.

The previous prime is 354643331617. The next prime is 354643331659. The reversal of 354643331641 is 146133346453.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 219492250000 + 135151081641 = 468500^2 + 367629^2 .

It is a cyclic number.

It is not a de Polignac number, because 354643331641 - 2³¹ = 352495847993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354643331681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6967650 + ... + 7018363.

It is an arithmetic number, because the mean of its divisors is an integer number (88664335753).

Almost surely, 2^354643331641 is an apocalyptic number.

It is an amenable number.

354643331641 is a deficient number, since it is larger than the sum of its proper divisors (14011371).

354643331641 is a wasteful number, since it uses less digits than its factorization.

354643331641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14011370.

The product of its digits is 933120, while the sum is 43.

The spelling of 354643331641 in words is "three hundred fifty-four billion, six hundred forty-three million, three hundred thirty-one thousand, six hundred forty-one".