212493352653 has 6 divisors (see below), whose sum is σ = 306934842734. Its totient is φ = 141662235096.

The previous prime is 212493352651. The next prime is 212493352667. The reversal of 212493352653 is 356253394212.

212493352653 is a `hidden beast` number, since 2 + 1 + 2 + 49 + 33 + 526 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 195259701924 + 17233650729 = 441882^2 + 131277^2 .

It is not a de Polignac number, because 212493352653 - 2¹ = 212493352651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212493352599 and 212493352608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212493352651) 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 5 ways as a sum of consecutive naturals, for example, 11805186250 + ... + 11805186267.

Almost surely, 2^212493352653 is an apocalyptic number.

It is an amenable number.

212493352653 is a deficient number, since it is larger than the sum of its proper divisors (94441490081).

212493352653 is a wasteful number, since it uses less digits than its factorization.

212493352653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23610372523 (or 23610372520 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The spelling of 212493352653 in words is "two hundred twelve billion, four hundred ninety-three million, three hundred fifty-two thousand, six hundred fifty-three".