212780370054049 has 4 divisors (see below), whose sum is σ = 243177565776064. Its totient is φ = 182383174332036.

The previous prime is 212780370054041. The next prime is 212780370054121. The reversal of 212780370054049 is 940450073087212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212780370054049 - 2³ = 212780370054041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212780370053987 and 212780370054005.

It is not an unprimeable number, because it can be changed into a prime (212780370054041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15198597860997 + ... + 15198597861010.

It is an arithmetic number, because the mean of its divisors is an integer number (60794391444016).

Almost surely, 2^{212780370054049} is an apocalyptic number.

It is an amenable number.

212780370054049 is a deficient number, since it is larger than the sum of its proper divisors (30397195722015).

212780370054049 is an equidigital number, since it uses as much as digits as its factorization.

212780370054049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30397195722014.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 212780370054049 in words is "two hundred twelve trillion, seven hundred eighty billion, three hundred seventy million, fifty-four thousand, forty-nine".