218306253152745 has 32 divisors (see below), whose sum is σ = 390932852394240. Its totient is φ = 115580147644800.

The previous prime is 218306253152707. The next prime is 218306253152791. The reversal of 218306253152745 is 547251352603812.

218306253152745 is a `hidden beast` number, since 2 + 1 + 8 + 3 + 0 + 62 + 53 + 1 + 527 + 4 + 5 = 666.

218306253152745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 218306253152745 - 2⁶ = 218306253152681 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 218306253152691 and 218306253152700.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5901745581 + ... + 5901782570.

It is an arithmetic number, because the mean of its divisors is an integer number (12216651637320).

Almost surely, 2^{218306253152745} is an apocalyptic number.

It is an amenable number.

218306253152745 is a deficient number, since it is larger than the sum of its proper divisors (172626599241495).

218306253152745 is a wasteful number, since it uses less digits than its factorization.

218306253152745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11803528302 (or 11803528296 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 218306253152745 in words is "two hundred eighteen trillion, three hundred six billion, two hundred fifty-three million, one hundred fifty-two thousand, seven hundred forty-five".