212345748061 has 8 divisors (see below), whose sum is σ = 215229680600. Its totient is φ = 209478830400.

The previous prime is 212345748053. The next prime is 212345748077. The reversal of 212345748061 is 160847543212.

It can be written as a sum of positive squares in 4 ways, for example, as 40012000900 + 172333747161 = 200030^2 + 415131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212345748061 - 2³ = 212345748053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212345747999 and 212345748017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212345748091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4228590 + ... + 4278511.

It is an arithmetic number, because the mean of its divisors is an integer number (26903710075).

Almost surely, 2^212345748061 is an apocalyptic number.

It is an amenable number.

212345748061 is a deficient number, since it is larger than the sum of its proper divisors (2883932539).

212345748061 is a wasteful number, since it uses less digits than its factorization.

212345748061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8507439.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 212345748061 in words is "two hundred twelve billion, three hundred forty-five million, seven hundred forty-eight thousand, sixty-one".