1678035253506 has 8 divisors (see below), whose sum is σ = 3356070507024. Its totient is φ = 559345084500.

The previous prime is 1678035253501. The next prime is 1678035253549. The reversal of 1678035253506 is 6053525308761.

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

1678035253506 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1678035253501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139836271120 + ... + 139836271131.

It is an arithmetic number, because the mean of its divisors is an integer number (419508813378).

Almost surely, 2^{1678035253506} is an apocalyptic number.

1678035253506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1678035253506 is a wasteful number, since it uses less digits than its factorization.

1678035253506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279672542256.

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 1678035253506 in words is "one trillion, six hundred seventy-eight billion, thirty-five million, two hundred fifty-three thousand, five hundred six".