786665047056 has 160 divisors (see below), whose sum is σ = 2391329445120. Its totient is φ = 218134591488.

The previous prime is 786665047043. The next prime is 786665047081. The reversal of 786665047056 is 650740566687.

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, 4855810 + ... + 5015198.

It is an arithmetic number, because the mean of its divisors is an integer number (14945809032).

Almost surely, 2^786665047056 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 786665047056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195664722560).

786665047056 is an abundant number, since it is smaller than the sum of its proper divisors (1604664398064).

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

786665047056 is a wasteful number, since it uses less digits than its factorization.

786665047056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159841 (or 159835 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 60.

The spelling of 786665047056 in words is "seven hundred eighty-six billion, six hundred sixty-five million, forty-seven thousand, fifty-six".