218465628045 has 144 divisors (see below), whose sum is σ = 418141676160. Its totient is φ = 97106833152.

The previous prime is 218465628037. The next prime is 218465628103. The reversal of 218465628045 is 540826564812.

It is a happy number.

It is not a de Polignac number, because 218465628045 - 2³ = 218465628037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 263528691 + ... + 263529519.

It is an arithmetic number, because the mean of its divisors is an integer number (2903761640).

Almost surely, 2^218465628045 is an apocalyptic number.

It is an amenable number.

218465628045 is a deficient number, since it is larger than the sum of its proper divisors (199676048115).

218465628045 is a wasteful number, since it uses less digits than its factorization.

218465628045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 51.

The spelling of 218465628045 in words is "two hundred eighteen billion, four hundred sixty-five million, six hundred twenty-eight thousand, forty-five".