802661071212 has 648 divisors, whose sum is σ = 2915538339168. Its totient is φ = 184064348160.

The previous prime is 802661071153. The next prime is 802661071231. The reversal of 802661071212 is 212170166208.

802661071212 is a `hidden beast` number, since 8 + 0 + 26 + 610 + 7 + 1 + 2 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 63813468 + ... + 63826044.

Almost surely, 2^802661071212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 802661071212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1457769169584).

802661071212 is an abundant number, since it is smaller than the sum of its proper divisors (2112877267956).

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

802661071212 is a wasteful number, since it uses less digits than its factorization.

802661071212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12659 (or 12636 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 802661071212 in words is "eight hundred two billion, six hundred sixty-one million, seventy-one thousand, two hundred twelve".