1385780366155 has 8 divisors (see below), whose sum is σ = 1750459410000. Its totient is φ = 1050275645856.

The previous prime is 1385780366153. The next prime is 1385780366161. The reversal of 1385780366155 is 5516630875831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1385780366155 - 2¹ = 1385780366153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1385780366155.

It is not an unprimeable number, because it can be changed into a prime (1385780366153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7293580780 + ... + 7293580969.

It is an arithmetic number, because the mean of its divisors is an integer number (218807426250).

Almost surely, 2^{1385780366155} is an apocalyptic number.

1385780366155 is a deficient number, since it is larger than the sum of its proper divisors (364679043845).

1385780366155 is a wasteful number, since it uses less digits than its factorization.

1385780366155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14587161773.

The product of its (nonzero) digits is 18144000, while the sum is 58.

The spelling of 1385780366155 in words is "one trillion, three hundred eighty-five billion, seven hundred eighty million, three hundred sixty-six thousand, one hundred fifty-five".