1812497857216 has 28 divisors (see below), whose sum is σ = 3785974145080. Its totient is φ = 858551616000.

The previous prime is 1812497857199. The next prime is 1812497857241. The reversal of 1812497857216 is 6127587942181.

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, 745269285 + ... + 745271716.

Almost surely, 2^{1812497857216} is an apocalyptic number.

1812497857216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1812497857216 is an abundant number, since it is smaller than the sum of its proper divisors (1973476287864).

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

1812497857216 is a wasteful number, since it uses less digits than its factorization.

1812497857216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490541032 (or 1490541022 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 61.

The spelling of 1812497857216 in words is "one trillion, eight hundred twelve billion, four hundred ninety-seven million, eight hundred fifty-seven thousand, two hundred sixteen".