1816005650860 has 12 divisors (see below), whose sum is σ = 3813611866848. Its totient is φ = 726402260336.

The previous prime is 1816005650843. The next prime is 1816005650861. The reversal of 1816005650860 is 680565006181.

It is a self number, because there is not a number n which added to its sum of digits gives 1816005650860.

It is not an unprimeable number, because it can be changed into a prime (1816005650861) 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, 45400141252 + ... + 45400141291.

It is an arithmetic number, because the mean of its divisors is an integer number (317800988904).

Almost surely, 2^{1816005650860} is an apocalyptic number.

1816005650860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1816005650860 is an abundant number, since it is smaller than the sum of its proper divisors (1997606215988).

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

1816005650860 is a wasteful number, since it uses less digits than its factorization.

1816005650860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90800282552 (or 90800282550 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 1816005650860 in words is "one trillion, eight hundred sixteen billion, five million, six hundred fifty thousand, eight hundred sixty".