662268078639 has 20 divisors (see below), whose sum is σ = 990021370800. Its totient is φ = 441196385760.

The previous prime is 662268078631. The next prime is 662268078683. The reversal of 662268078639 is 936870862266.

It is not a de Polignac number, because 662268078639 - 2³ = 662268078631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662268078631) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2808822 + ... + 3035459.

It is an arithmetic number, because the mean of its divisors is an integer number (49501068540).

Almost surely, 2^662268078639 is an apocalyptic number.

662268078639 is a deficient number, since it is larger than the sum of its proper divisors (327753292161).

662268078639 is a wasteful number, since it uses less digits than its factorization.

662268078639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5845692 (or 5845683 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 662268078639 in words is "six hundred sixty-two billion, two hundred sixty-eight million, seventy-eight thousand, six hundred thirty-nine".