818350644145 has 32 divisors (see below), whose sum is σ = 1059018323328. Its totient is φ = 604867980288.

The previous prime is 818350644113. The next prime is 818350644161. The reversal of 818350644145 is 541446053818.

It is a cyclic number.

It is not a de Polignac number, because 818350644145 - 2⁵ = 818350644113 is a prime.

It is a Duffinian number.

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, 738222 + ... + 1477048.

It is an arithmetic number, because the mean of its divisors is an integer number (33094322604).

Almost surely, 2^818350644145 is an apocalyptic number.

818350644145 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

818350644145 is a deficient number, since it is larger than the sum of its proper divisors (240667679183).

818350644145 is a wasteful number, since it uses less digits than its factorization.

818350644145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739089.

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 818350644145 in words is "eight hundred eighteen billion, three hundred fifty million, six hundred forty-four thousand, one hundred forty-five".