1806157456212 has 96 divisors (see below), whose sum is σ = 4451539079680. Its totient is φ = 568391852160.

The previous prime is 1806157456133. The next prime is 1806157456241. The reversal of 1806157456212 is 2126547516081.

It is a happy number.

It is a congruent 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, 249569058 + ... + 249576294.

Almost surely, 2^{1806157456212} is an apocalyptic number.

1806157456212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1806157456212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2225769539840).

1806157456212 is an abundant number, since it is smaller than the sum of its proper divisors (2645381623468).

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

1806157456212 is a wasteful number, since it uses less digits than its factorization.

1806157456212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10901 (or 10899 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 1806157456212 in words is "one trillion, eight hundred six billion, one hundred fifty-seven million, four hundred fifty-six thousand, two hundred twelve".