662643206780 has 12 divisors (see below), whose sum is σ = 1391550734280. Its totient is φ = 265057282704.

The previous prime is 662643206759. The next prime is 662643206791. The reversal of 662643206780 is 87602346266.

662643206780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16566080150 + ... + 16566080189.

It is an arithmetic number, because the mean of its divisors is an integer number (115962561190).

Almost surely, 2^662643206780 is an apocalyptic number.

It is an amenable number.

662643206780 is an abundant number, since it is smaller than the sum of its proper divisors (728907527500).

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

662643206780 is a wasteful number, since it uses less digits than its factorization.

662643206780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33132160348 (or 33132160346 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 50.

The spelling of 662643206780 in words is "six hundred sixty-two billion, six hundred forty-three million, two hundred six thousand, seven hundred eighty".