786571870066 has 16 divisors (see below), whose sum is σ = 1187112104640. Its totient is φ = 390868586640.

The previous prime is 786571869953. The next prime is 786571870079. The reversal of 786571870066 is 660078175687.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 786571869986 and 786571870013.

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 7 ways as a sum of consecutive naturals, for example, 1945996 + ... + 2315176.

It is an arithmetic number, because the mean of its divisors is an integer number (74194506540).

Almost surely, 2^786571870066 is an apocalyptic number.

786571870066 is a deficient number, since it is larger than the sum of its proper divisors (400540234574).

786571870066 is a wasteful number, since it uses less digits than its factorization.

786571870066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375729.

The product of its (nonzero) digits is 23708160, while the sum is 61.

The spelling of 786571870066 in words is "seven hundred eighty-six billion, five hundred seventy-one million, eight hundred seventy thousand, sixty-six".