212873933615872 has 18 divisors (see below), whose sum is σ = 424916328429068. Its totient is φ = 106436966807808.

The previous prime is 212873933615851. The next prime is 212873933615887. The reversal of 212873933615872 is 278516339378212.

It is a happy number.

It is a super-2 number, since 2×212873933615872² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212873933615798 and 212873933615807.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415769401338 + ... + 415769401849.

Almost surely, 2^{212873933615872} is an apocalyptic number.

It is an amenable number.

212873933615872 is a deficient number, since it is larger than the sum of its proper divisors (212042394813196).

212873933615872 is an frugal number, since it uses more digits than its factorization.

212873933615872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831538803203 (or 831538803189 counting only the distinct ones).

The product of its digits is 182891520, while the sum is 67.

The spelling of 212873933615872 in words is "two hundred twelve trillion, eight hundred seventy-three billion, nine hundred thirty-three million, six hundred fifteen thousand, eight hundred seventy-two".