354216643771 has 4 divisors (see below), whose sum is σ = 375052916952. Its totient is φ = 333380370592.

The previous prime is 354216643751. The next prime is 354216643777. The reversal of 354216643771 is 177346612453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177346612453 = 41 ⋅4325527133.

It is a cyclic number.

It is not a de Polignac number, because 354216643771 - 2⁷ = 354216643643 is a prime.

It is a super-3 number, since 3×354216643771³ (a number of 36 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354216643777) 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, 10418136565 + ... + 10418136598.

It is an arithmetic number, because the mean of its divisors is an integer number (93763229238).

Almost surely, 2^354216643771 is an apocalyptic number.

354216643771 is a deficient number, since it is larger than the sum of its proper divisors (20836273181).

354216643771 is a wasteful number, since it uses less digits than its factorization.

354216643771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20836273180.

The product of its digits is 2540160, while the sum is 49.

The spelling of 354216643771 in words is "three hundred fifty-four billion, two hundred sixteen million, six hundred forty-three thousand, seven hundred seventy-one".