218765151252 has 18 divisors (see below), whose sum is σ = 552989687978. Its totient is φ = 72921717072.

The previous prime is 218765151229. The next prime is 218765151259. The reversal of 218765151252 is 252151567812.

It is a happy number.

218765151252 is a `hidden beast` number, since 2 + 1 + 8 + 7 + 6 + 515 + 125 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 217644642576 + 1120508676 = 466524^2 + 33474^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 218765151198 and 218765151207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218765151259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3038404843 + ... + 3038404914.

Almost surely, 2^218765151252 is an apocalyptic number.

It is an amenable number.

218765151252 is an abundant number, since it is smaller than the sum of its proper divisors (334224536726).

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

218765151252 is a wasteful number, since it uses less digits than its factorization.

218765151252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076809767 (or 6076809762 counting only the distinct ones).

The product of its digits is 336000, while the sum is 45.

The spelling of 218765151252 in words is "two hundred eighteen billion, seven hundred sixty-five million, one hundred fifty-one thousand, two hundred fifty-two".