845690800218 has 64 divisors (see below), whose sum is σ = 1895224573440. Its totient is φ = 249315796800.

The previous prime is 845690800211. The next prime is 845690800231. The reversal of 845690800218 is 812008096548.

It is a super-2 number, since 2×845690800218² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (845690800211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34007073 + ... + 34031931.

It is an arithmetic number, because the mean of its divisors is an integer number (29612883960).

Almost surely, 2^845690800218 is an apocalyptic number.

845690800218 is an abundant number, since it is smaller than the sum of its proper divisors (1049533773222).

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

845690800218 is a wasteful number, since it uses less digits than its factorization.

845690800218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38843.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The spelling of 845690800218 in words is "eight hundred forty-five billion, six hundred ninety million, eight hundred thousand, two hundred eighteen".