218607126145 has 8 divisors (see below), whose sum is σ = 262338065640. Its totient is φ = 174879358080.

The previous prime is 218607126139. The next prime is 218607126167. The reversal of 218607126145 is 541621706812.

It can be written as a sum of positive squares in 4 ways, for example, as 9830325904 + 208776800241 = 99148^2 + 456921^2 .

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

It is not a de Polignac number, because 218607126145 - 2⁵ = 218607126113 is a prime.

It is a super-2 number, since 2×218607126145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638476 + ... + 919165.

It is an arithmetic number, because the mean of its divisors is an integer number (32792258205).

Almost surely, 2^218607126145 is an apocalyptic number.

It is an amenable number.

218607126145 is a deficient number, since it is larger than the sum of its proper divisors (43730939495).

218607126145 is a wasteful number, since it uses less digits than its factorization.

218607126145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585715.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 218607126145 in words is "two hundred eighteen billion, six hundred seven million, one hundred twenty-six thousand, one hundred forty-five".