662812799616 has 256 divisors, whose sum is σ = 2163299068800. Its totient is φ = 198100131840.

The previous prime is 662812799609. The next prime is 662812799639. The reversal of 662812799616 is 616997218266.

662812799616 is a `hidden beast` number, since 6 + 6 + 2 + 8 + 1 + 2 + 7 + 9 + 9 + 616 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2655750 + ... + 2894586.

Almost surely, 2^662812799616 is an apocalyptic number.

662812799616 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662812799616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081649534400).

662812799616 is an abundant number, since it is smaller than the sum of its proper divisors (1500486269184).

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

662812799616 is a wasteful number, since it uses less digits than its factorization.

662812799616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238944 (or 238926 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 662812799616 in words is "six hundred sixty-two billion, eight hundred twelve million, seven hundred ninety-nine thousand, six hundred sixteen".