212635442550 has 24 divisors (see below), whose sum is σ = 527335897896. Its totient is φ = 56702784640.

The previous prime is 212635442479. The next prime is 212635442567. The reversal of 212635442550 is 55244536212.

212635442550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212635442499 and 212635442508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708784659 + ... + 708784958.

It is an arithmetic number, because the mean of its divisors is an integer number (21972329079).

Almost surely, 2^212635442550 is an apocalyptic number.

212635442550 is an abundant number, since it is smaller than the sum of its proper divisors (314700455346).

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

212635442550 is a wasteful number, since it uses less digits than its factorization.

212635442550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417569632 (or 1417569627 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 212635442550 its reverse (55244536212), we get a palindrome (267879978762).

The spelling of 212635442550 in words is "two hundred twelve billion, six hundred thirty-five million, four hundred forty-two thousand, five hundred fifty".