1378305061166 has 32 divisors (see below), whose sum is σ = 2330972743680. Its totient is φ = 605560946400.

The previous prime is 1378305061123. The next prime is 1378305061171. The reversal of 1378305061166 is 6611605038731.

It is a super-2 number, since 2×1378305061166² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1378305061166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 653546 + ... + 1784301.

It is an arithmetic number, because the mean of its divisors is an integer number (72842898240).

Almost surely, 2^{1378305061166} is an apocalyptic number.

1378305061166 is a deficient number, since it is larger than the sum of its proper divisors (952667682514).

1378305061166 is a wasteful number, since it uses less digits than its factorization.

1378305061166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438720.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 1378305061166 in words is "one trillion, three hundred seventy-eight billion, three hundred five million, sixty-one thousand, one hundred sixty-six".