218457000445 has 8 divisors (see below), whose sum is σ = 262166503680. Its totient is φ = 174753531600.

The previous prime is 218457000407. The next prime is 218457000449. The reversal of 218457000445 is 544000754812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 218457000445 - 2⁷ = 218457000317 is a prime.

It is a super-2 number, since 2×218457000445² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 218457000398 and 218457000407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218457000449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428565 + ... + 1574074.

It is an arithmetic number, because the mean of its divisors is an integer number (32770812960).

Almost surely, 2^218457000445 is an apocalyptic number.

It is an amenable number.

218457000445 is a deficient number, since it is larger than the sum of its proper divisors (43709503235).

218457000445 is a wasteful number, since it uses less digits than its factorization.

218457000445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017195.

The product of its (nonzero) digits is 179200, while the sum is 40.

The spelling of 218457000445 in words is "two hundred eighteen billion, four hundred fifty-seven million, four hundred forty-five", and thus it is an aban number.