1678647250896 has 240 divisors, whose sum is σ = 5480952863232. Its totient is φ = 433335640320.

The previous prime is 1678647250883. The next prime is 1678647250913. The reversal of 1678647250896 is 6980527468761.

It is a self number, because there is not a number n which added to its sum of digits gives 1678647250896.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6500275 + ... + 6753581.

Almost surely, 2^{1678647250896} is an apocalyptic number.

1678647250896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1678647250896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2740476431616).

1678647250896 is an abundant number, since it is smaller than the sum of its proper divisors (3802305612336).

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

1678647250896 is a wasteful number, since it uses less digits than its factorization.

1678647250896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253510 (or 253493 counting only the distinct ones).

The product of its (nonzero) digits is 243855360, while the sum is 69.

The spelling of 1678647250896 in words is "one trillion, six hundred seventy-eight billion, six hundred forty-seven million, two hundred fifty thousand, eight hundred ninety-six".