1805557323252 has 12 divisors (see below), whose sum is σ = 4212967087616. Its totient is φ = 601852441080.

The previous prime is 1805557323239. The next prime is 1805557323263. The reversal of 1805557323252 is 2523237555081.

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, 75231555124 + ... + 75231555147.

Almost surely, 2^{1805557323252} is an apocalyptic number.

1805557323252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1805557323252 is an abundant number, since it is smaller than the sum of its proper divisors (2407409764364).

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

1805557323252 is a wasteful number, since it uses less digits than its factorization.

1805557323252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150463110278 (or 150463110276 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 48.

The spelling of 1805557323252 in words is "one trillion, eight hundred five billion, five hundred fifty-seven million, three hundred twenty-three thousand, two hundred fifty-two".