212116007653 has 4 divisors (see below), whose sum is σ = 231399281088. Its totient is φ = 192832734220.

The previous prime is 212116007641. The next prime is 212116007659. The reversal of 212116007653 is 356700611212.

212116007653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-212116007653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212116007659) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9641636701 + ... + 9641636722.

It is an arithmetic number, because the mean of its divisors is an integer number (57849820272).

Almost surely, 2^212116007653 is an apocalyptic number.

It is an amenable number.

212116007653 is a deficient number, since it is larger than the sum of its proper divisors (19283273435).

212116007653 is a wasteful number, since it uses less digits than its factorization.

212116007653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19283273434.

The product of its (nonzero) digits is 15120, while the sum is 34.

Adding to 212116007653 its reverse (356700611212), we get a palindrome (568816618865).

The spelling of 212116007653 in words is "two hundred twelve billion, one hundred sixteen million, seven thousand, six hundred fifty-three".