1778907675468 has 192 divisors, whose sum is σ = 5239768891392. Its totient is φ = 456276549120.

The previous prime is 1778907675437. The next prime is 1778907675491. The reversal of 1778907675468 is 8645767098771.

It is a self number, because there is not a number n which added to its sum of digits gives 1778907675468.

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 63 ways as a sum of consecutive naturals, for example, 231836080 + ... + 231843752.

It is an arithmetic number, because the mean of its divisors is an integer number (27290462976).

Almost surely, 2^{1778907675468} 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 1778907675468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2619884445696).

1778907675468 is an abundant number, since it is smaller than the sum of its proper divisors (3460861215924).

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

1778907675468 is a wasteful number, since it uses less digits than its factorization.

1778907675468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10804 (or 10802 counting only the distinct ones).

The product of its (nonzero) digits is 995742720, while the sum is 75.

The spelling of 1778907675468 in words is "one trillion, seven hundred seventy-eight billion, nine hundred seven million, six hundred seventy-five thousand, four hundred sixty-eight".