218957468109 has 32 divisors (see below), whose sum is σ = 304484745600. Its totient is φ = 139788015360.

The previous prime is 218957468089. The next prime is 218957468129. The reversal of 218957468109 is 901864759812.

It is an interprime number because it is at equal distance from previous prime (218957468089) and next prime (218957468129).

It is not a de Polignac number, because 218957468109 - 2⁵ = 218957468077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218957468129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5358247 + ... + 5398955.

It is an arithmetic number, because the mean of its divisors is an integer number (9515148300).

Almost surely, 2^218957468109 is an apocalyptic number.

218957468109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

218957468109 is a deficient number, since it is larger than the sum of its proper divisors (85527277491).

218957468109 is a wasteful number, since it uses less digits than its factorization.

218957468109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41245.

The product of its (nonzero) digits is 8709120, while the sum is 60.

The spelling of 218957468109 in words is "two hundred eighteen billion, nine hundred fifty-seven million, four hundred sixty-eight thousand, one hundred nine".