45321712218 has 32 divisors (see below), whose sum is σ = 100752364800. Its totient is φ = 15101620128.

The previous prime is 45321712213. The next prime is 45321712223. The reversal of 45321712218 is 81221712354.

45321712218 is a `hidden beast` number, since 45 + 321 + 71 + 221 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (45321712213) and next prime (45321712223).

It is not an unprimeable number, because it can be changed into a prime (45321712211) 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 15 ways as a sum of consecutive naturals, for example, 8178 + ... + 301181.

It is an arithmetic number, because the mean of its divisors is an integer number (3148511400).

Almost surely, 2^45321712218 is an apocalyptic number.

45321712218 is an abundant number, since it is smaller than the sum of its proper divisors (55430652582).

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

45321712218 is a wasteful number, since it uses less digits than its factorization.

45321712218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312083 (or 312077 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The spelling of 45321712218 in words is "forty-five billion, three hundred twenty-one million, seven hundred twelve thousand, two hundred eighteen".