218000267012664 has 160 divisors (see below), whose sum is σ = 646755673410000. Its totient is φ = 68367352181760.

The previous prime is 218000267012609. The next prime is 218000267012707. The reversal of 218000267012664 is 466210762000812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26683599 + ... + 33882369.

Almost surely, 2^{218000267012664} is an apocalyptic number.

218000267012664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218000267012664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323377836705000).

218000267012664 is an abundant number, since it is smaller than the sum of its proper divisors (428755406397336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218000267012664 is a wasteful number, since it uses less digits than its factorization.

218000267012664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7201555 (or 7201542 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 218000267012664 in words is "two hundred eighteen trillion, two hundred sixty-seven million, twelve thousand, six hundred sixty-four".