1811345607804 has 12 divisors (see below), whose sum is σ = 4226473084904. Its totient is φ = 603781869264.

The previous prime is 1811345607781. The next prime is 1811345607833. The reversal of 1811345607804 is 4087065431181.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75472733647 + ... + 75472733670.

Almost surely, 2^{1811345607804} is an apocalyptic number.

It is an amenable number.

1811345607804 is an abundant number, since it is smaller than the sum of its proper divisors (2415127477100).

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

1811345607804 is a wasteful number, since it uses less digits than its factorization.

1811345607804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150945467324 (or 150945467322 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 1811345607804 in words is "one trillion, eight hundred eleven billion, three hundred forty-five million, six hundred seven thousand, eight hundred four".