354865860243 has 10 divisors (see below), whose sum is σ = 530108260484. Its totient is φ = 236577240108.

The previous prime is 354865860187. The next prime is 354865860247. The reversal of 354865860243 is 342068568453.

354865860243 is a `hidden beast` number, since 3 + 54 + 8 + 6 + 586 + 0 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 354865860243 - 2⁹ = 354865859731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 354865860243.

It is not an unprimeable number, because it can be changed into a prime (354865860247) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2190529921 + ... + 2190530082.

Almost surely, 2^354865860243 is an apocalyptic number.

354865860243 is a deficient number, since it is larger than the sum of its proper divisors (175242400241).

354865860243 is an equidigital number, since it uses as much as digits as its factorization.

354865860243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381060015 (or 4381060006 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 54.

The spelling of 354865860243 in words is "three hundred fifty-four billion, eight hundred sixty-five million, eight hundred sixty thousand, two hundred forty-three".