223515551345 has 32 divisors (see below), whose sum is σ = 279266274720. Its totient is φ = 171733868544.

The previous prime is 223515551341. The next prime is 223515551359. The reversal of 223515551345 is 543155515322.

It can be written as a sum of positive squares in 16 ways, for example, as 199769665936 + 23745885409 = 446956^2 + 154097^2 .

It is not a de Polignac number, because 223515551345 - 2² = 223515551341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (223515551341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23530637 + ... + 23540133.

It is an arithmetic number, because the mean of its divisors is an integer number (8727071085).

Almost surely, 2^223515551345 is an apocalyptic number.

It is an amenable number.

223515551345 is a deficient number, since it is larger than the sum of its proper divisors (55750723375).

223515551345 is an frugal number, since it uses more digits than its factorization.

223515551345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9782 (or 9724 counting only the distinct ones).

The product of its digits is 450000, while the sum is 41.

The spelling of 223515551345 in words is "two hundred twenty-three billion, five hundred fifteen million, five hundred fifty-one thousand, three hundred forty-five".