218945050520 has 32 divisors (see below), whose sum is σ = 563001559200. Its totient is φ = 75066874368.

The previous prime is 218945050487. The next prime is 218945050537. The reversal of 218945050520 is 25050549812.

218945050520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390973025 + ... + 390973584.

It is an arithmetic number, because the mean of its divisors is an integer number (17593798725).

Almost surely, 2^218945050520 is an apocalyptic number.

218945050520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218945050520 is an abundant number, since it is smaller than the sum of its proper divisors (344056508680).

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

218945050520 is a wasteful number, since it uses less digits than its factorization.

218945050520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781946627 (or 781946623 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 218945050520 in words is "two hundred eighteen billion, nine hundred forty-five million, fifty thousand, five hundred twenty".