1366978541307 has 16 divisors (see below), whose sum is σ = 1843697572992. Its totient is φ = 900843407360.

The previous prime is 1366978541267. The next prime is 1366978541347. The reversal of 1366978541307 is 7031458796631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1366978541267) and next prime (1366978541347).

It is a cyclic number.

It is not a de Polignac number, because 1366978541307 - 2¹⁰ = 1366978540283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1366978541347) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6666153 + ... + 6868154.

It is an arithmetic number, because the mean of its divisors is an integer number (115231098312).

Almost surely, 2^{1366978541307} is an apocalyptic number.

1366978541307 is a deficient number, since it is larger than the sum of its proper divisors (476719031685).

1366978541307 is a wasteful number, since it uses less digits than its factorization.

1366978541307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13534698.

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 1366978541307 in words is "one trillion, three hundred sixty-six billion, nine hundred seventy-eight million, five hundred forty-one thousand, three hundred seven".