1811700008864 has 12 divisors (see below), whose sum is σ = 3566784392514. Its totient is φ = 905850004416.

The previous prime is 1811700008861. The next prime is 1811700008887. The reversal of 1811700008864 is 4688000071181.

It can be written as a sum of positive squares in only one way, i.e., 1656605816464 + 155094192400 = 1287092^2 + 393820^2 .

It is not an unprimeable number, because it can be changed into a prime (1811700008861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28307812607 + ... + 28307812670.

Almost surely, 2^{1811700008864} is an apocalyptic number.

It is an amenable number.

1811700008864 is a deficient number, since it is larger than the sum of its proper divisors (1755084383650).

1811700008864 is an equidigital number, since it uses as much as digits as its factorization.

1811700008864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56615625287 (or 56615625279 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 44.

The spelling of 1811700008864 in words is "one trillion, eight hundred eleven billion, seven hundred million, eight thousand, eight hundred sixty-four".