612246643555640 has 64 divisors (see below), whose sum is σ = 1469921646160800. Its totient is φ = 228831045414912.

The previous prime is 612246643555639. The next prime is 612246643555691. The reversal of 612246643555640 is 46555346642216.

It is a self number, because there is not a number n which added to its sum of digits gives 612246643555640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5517668417 + ... + 5517779376.

Almost surely, 2^{612246643555640} is an apocalyptic number.

It is an amenable number.

612246643555640 is an abundant number, since it is smaller than the sum of its proper divisors (857675002605160).

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

612246643555640 is a wasteful number, since it uses less digits than its factorization.

612246643555640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11035447896 (or 11035447892 counting only the distinct ones).

The product of its (nonzero) digits is 124416000, while the sum is 59.

The spelling of 612246643555640 in words is "six hundred twelve trillion, two hundred forty-six billion, six hundred forty-three million, five hundred fifty-five thousand, six hundred forty".