612246643555621 has 8 divisors (see below), whose sum is σ = 672490592464320. Its totient is φ = 554804738782272.

The previous prime is 612246643555597. The next prime is 612246643555639. The reversal of 612246643555621 is 126555346642216.

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 612246643555621 - 2⁹ = 612246643555109 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 (612246643555691) 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, 700511033380 + ... + 700511034253.

It is an arithmetic number, because the mean of its divisors is an integer number (84061324058040).

Almost surely, 2^{612246643555621} is an apocalyptic number.

It is an amenable number.

612246643555621 is a deficient number, since it is larger than the sum of its proper divisors (60243948908699).

612246643555621 is a wasteful number, since it uses less digits than its factorization.

612246643555621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401022067675.

The product of its digits is 62208000, while the sum is 58.

The spelling of 612246643555621 in words is "six hundred twelve trillion, two hundred forty-six billion, six hundred forty-three million, five hundred fifty-five thousand, six hundred twenty-one".