223244402985 has 24 divisors (see below), whose sum is σ = 409719141000. Its totient is φ = 112059935232.

The previous prime is 223244402977. The next prime is 223244403013. The reversal of 223244402985 is 589204442322.

223244402985 is a `hidden beast` number, since 2 + 232 + 4 + 4 + 402 + 9 + 8 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 49795476201 + 173448926784 = 223149^2 + 416472^2 .

It is not a de Polignac number, because 223244402985 - 2³ = 223244402977 is a prime.

It is a super-3 number, since 3×223244402985³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 223244402985.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145910610 + ... + 145912139.

It is an arithmetic number, because the mean of its divisors is an integer number (17071630875).

Almost surely, 2^223244402985 is an apocalyptic number.

It is an amenable number.

223244402985 is a deficient number, since it is larger than the sum of its proper divisors (186474738015).

223244402985 is a wasteful number, since it uses less digits than its factorization.

223244402985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291822777 (or 291822774 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 223244402985 in words is "two hundred twenty-three billion, two hundred forty-four million, four hundred two thousand, nine hundred eighty-five".