218352052037 has 4 divisors (see below), whose sum is σ = 249545202336. Its totient is φ = 187158901740.

The previous prime is 218352052019. The next prime is 218352052043. The reversal of 218352052037 is 730250253812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 218352052037 - 2¹⁸ = 218351789893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218352051037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15596575139 + ... + 15596575152.

It is an arithmetic number, because the mean of its divisors is an integer number (62386300584).

Almost surely, 2^218352052037 is an apocalyptic number.

It is an amenable number.

218352052037 is a deficient number, since it is larger than the sum of its proper divisors (31193150299).

218352052037 is an equidigital number, since it uses as much as digits as its factorization.

218352052037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31193150298.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 218352052037 in words is "two hundred eighteen billion, three hundred fifty-two million, fifty-two thousand, thirty-seven".