1387325911105 has 8 divisors (see below), whose sum is σ = 1665016322472. Its totient is φ = 1109710576128.

The previous prime is 1387325911099. The next prime is 1387325911117. The reversal of 1387325911105 is 5011195237831.

It is a Cunningham number, because it is equal to 1177848²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 224653248576 + 1162672662529 = 473976^2 + 1078273^2 .

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 1387325911105 - 2²³ = 1387317522497 is a prime.

It is a super-3 number, since 3×1387325911105³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18728434 + ... + 18802363.

It is an arithmetic number, because the mean of its divisors is an integer number (208127040309).

Almost surely, 2^{1387325911105} is an apocalyptic number.

It is an amenable number.

1387325911105 is a deficient number, since it is larger than the sum of its proper divisors (277690411367).

1387325911105 is an equidigital number, since it uses as much as digits as its factorization.

1387325911105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37538195.

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 1387325911105 in words is "one trillion, three hundred eighty-seven billion, three hundred twenty-five million, nine hundred eleven thousand, one hundred five".