662813805216 has 24 divisors (see below), whose sum is σ = 1739886238944. Its totient is φ = 220937935040.

The previous prime is 662813805179. The next prime is 662813805217. The reversal of 662813805216 is 612508318266.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (662813805217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3452155140 + ... + 3452155331.

It is an arithmetic number, because the mean of its divisors is an integer number (72495259956).

Almost surely, 2^662813805216 is an apocalyptic number.

It is an amenable number.

662813805216 is an abundant number, since it is smaller than the sum of its proper divisors (1077072433728).

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

662813805216 is a wasteful number, since it uses less digits than its factorization.

662813805216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6904310484 (or 6904310476 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 662813805216 in words is "six hundred sixty-two billion, eight hundred thirteen million, eight hundred five thousand, two hundred sixteen".