1380412778117 has 4 divisors (see below), whose sum is σ = 1380505931916. Its totient is φ = 1380319624320.

The previous prime is 1380412778099. The next prime is 1380412778219. The reversal of 1380412778117 is 7118772140831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1099039819201 + 281372958916 = 1048351^2 + 530446^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380412778117 - 2²⁴ = 1380396000901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380412778317) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 46554668 + ... + 46584309.

It is an arithmetic number, because the mean of its divisors is an integer number (345126482979).

Almost surely, 2^{1380412778117} is an apocalyptic number.

It is an amenable number.

1380412778117 is a deficient number, since it is larger than the sum of its proper divisors (93153799).

1380412778117 is an equidigital number, since it uses as much as digits as its factorization.

1380412778117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93153798.

The product of its (nonzero) digits is 526848, while the sum is 50.

The spelling of 1380412778117 in words is "one trillion, three hundred eighty billion, four hundred twelve million, seven hundred seventy-eight thousand, one hundred seventeen".