218045161020 has 48 divisors (see below), whose sum is σ = 627027172128. Its totient is φ = 56573879040.

The previous prime is 218045161013. The next prime is 218045161043. The reversal of 218045161020 is 20161540812.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49107051 + ... + 49111490.

It is an arithmetic number, because the mean of its divisors is an integer number (13063066086).

Almost surely, 2^218045161020 is an apocalyptic number.

218045161020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218045161020 is an abundant number, since it is smaller than the sum of its proper divisors (408982011108).

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

218045161020 is a wasteful number, since it uses less digits than its factorization.

218045161020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98218590 (or 98218588 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The spelling of 218045161020 in words is "two hundred eighteen billion, forty-five million, one hundred sixty-one thousand, twenty".