354216631823 has 4 divisors (see below), whose sum is σ = 354981679008. Its totient is φ = 353451584640.

The previous prime is 354216631801. The next prime is 354216631831. The reversal of 354216631823 is 328136612453.

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

It is a cyclic number.

It is not a de Polignac number, because 354216631823 - 2¹⁸ = 354216369679 is a prime.

It is a super-3 number, since 3×354216631823³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354216631883) 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, 382522898 + ... + 382523823.

It is an arithmetic number, because the mean of its divisors is an integer number (88745419752).

Almost surely, 2^354216631823 is an apocalyptic number.

354216631823 is a deficient number, since it is larger than the sum of its proper divisors (765047185).

354216631823 is an equidigital number, since it uses as much as digits as its factorization.

354216631823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765047184.

The product of its digits is 622080, while the sum is 44.

The spelling of 354216631823 in words is "three hundred fifty-four billion, two hundred sixteen million, six hundred thirty-one thousand, eight hundred twenty-three".