2066347742856 has 64 divisors (see below), whose sum is σ = 5239925665920. Its totient is φ = 678913213440.

The previous prime is 2066347742819. The next prime is 2066347742861. The reversal of 2066347742856 is 6582477436602.

It is a self number, because there is not a number n which added to its sum of digits gives 2066347742856.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6826336 + ... + 7122608.

It is an arithmetic number, because the mean of its divisors is an integer number (81873838530).

Almost surely, 2^{2066347742856} is an apocalyptic number.

It is an amenable number.

2066347742856 is an abundant number, since it is smaller than the sum of its proper divisors (3173577923064).

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

2066347742856 is a wasteful number, since it uses less digits than its factorization.

2066347742856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300446 (or 300442 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 60.

The spelling of 2066347742856 in words is "two trillion, sixty-six billion, three hundred forty-seven million, seven hundred forty-two thousand, eight hundred fifty-six".