218491576049 has 8 divisors (see below), whose sum is σ = 223617826080. Its totient is φ = 213367373856.

The previous prime is 218491576003. The next prime is 218491576073. The reversal of 218491576049 is 940675194812.

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

It is a cyclic number.

It is not a de Polignac number, because 218491576049 - 2⁸ = 218491575793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 218491575985 and 218491576003.

It is not an unprimeable number, because it can be changed into a prime (218491576099) 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, 295004 + ... + 723885.

It is an arithmetic number, because the mean of its divisors is an integer number (27952228260).

Almost surely, 2^218491576049 is an apocalyptic number.

It is an amenable number.

218491576049 is a deficient number, since it is larger than the sum of its proper divisors (5126250031).

218491576049 is a wasteful number, since it uses less digits than its factorization.

218491576049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023919.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 218491576049 in words is "two hundred eighteen billion, four hundred ninety-one million, five hundred seventy-six thousand, forty-nine".