218077162520 has 32 divisors (see below), whose sum is σ = 560769847200. Its totient is φ = 74769312768.

The previous prime is 218077162507. The next prime is 218077162529. The reversal of 218077162520 is 25261770812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218077162529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389423225 + ... + 389423784.

It is an arithmetic number, because the mean of its divisors is an integer number (17524057725).

Almost surely, 2^218077162520 is an apocalyptic number.

218077162520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218077162520 is an abundant number, since it is smaller than the sum of its proper divisors (342692684680).

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

218077162520 is a wasteful number, since it uses less digits than its factorization.

218077162520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778847027 (or 778847023 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 218077162520 in words is "two hundred eighteen billion, seventy-seven million, one hundred sixty-two thousand, five hundred twenty".