355223016949 has 4 divisors (see below), whose sum is σ = 358481943820. Its totient is φ = 351964090080.

The previous prime is 355223016919. The next prime is 355223016983. The reversal of 355223016949 is 949610322553.

It is a happy number.

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 153076562500 + 202146454449 = 391250^2 + 449607^2 .

It is a cyclic number.

It is not a de Polignac number, because 355223016949 - 2¹⁹ = 355222492661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355223016919) 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, 1629463272 + ... + 1629463489.

It is an arithmetic number, because the mean of its divisors is an integer number (89620485955).

Almost surely, 2^355223016949 is an apocalyptic number.

It is an amenable number.

355223016949 is a deficient number, since it is larger than the sum of its proper divisors (3258926871).

355223016949 is a wasteful number, since it uses less digits than its factorization.

355223016949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258926870.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 355223016949 in words is "three hundred fifty-five billion, two hundred twenty-three million, sixteen thousand, nine hundred forty-nine".