218893400601 has 4 divisors (see below), whose sum is σ = 291857867472. Its totient is φ = 145928933732.

The previous prime is 218893400599. The next prime is 218893400617. The reversal of 218893400601 is 106004398812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 218893400601 - 2¹ = 218893400599 is a prime.

It is a super-2 number, since 2×218893400601² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (218893400651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36482233431 + ... + 36482233436.

It is an arithmetic number, because the mean of its divisors is an integer number (72964466868).

Almost surely, 2^218893400601 is an apocalyptic number.

It is an amenable number.

218893400601 is a deficient number, since it is larger than the sum of its proper divisors (72964466871).

218893400601 is an equidigital number, since it uses as much as digits as its factorization.

218893400601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72964466870.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 218893400601 in words is "two hundred eighteen billion, eight hundred ninety-three million, four hundred thousand, six hundred one".