1682288640778 has 8 divisors (see below), whose sum is σ = 2582117448768. Its totient is φ = 821582824524.

The previous prime is 1682288640743. The next prime is 1682288640793. The reversal of 1682288640778 is 8770468822861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9780747826 + ... + 9780747997.

It is an arithmetic number, because the mean of its divisors is an integer number (322764681096).

Almost surely, 2^{1682288640778} is an apocalyptic number.

1682288640778 is a deficient number, since it is larger than the sum of its proper divisors (899828807990).

1682288640778 is a wasteful number, since it uses less digits than its factorization.

1682288640778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19561495868.

The product of its (nonzero) digits is 115605504, while the sum is 67.

The spelling of 1682288640778 in words is "one trillion, six hundred eighty-two billion, two hundred eighty-eight million, six hundred forty thousand, seven hundred seventy-eight".