1103568306138 has 96 divisors (see below), whose sum is σ = 2621819126160. Its totient is φ = 333921208320.

The previous prime is 1103568306119. The next prime is 1103568306193. The reversal of 1103568306138 is 8316038653011.

It can be written as a sum of positive squares in 8 ways, for example, as 825294120849 + 278274185289 = 908457^2 + 527517^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1103568306093 and 1103568306102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8284356 + ... + 8416512.

Almost surely, 2^{1103568306138} is an apocalyptic number.

1103568306138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103568306138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310909563080).

1103568306138 is an abundant number, since it is smaller than the sum of its proper divisors (1518250820022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1103568306138 is a wasteful number, since it uses less digits than its factorization.

1103568306138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133152 (or 133149 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 1103568306138 in words is "one trillion, one hundred three billion, five hundred sixty-eight million, three hundred six thousand, one hundred thirty-eight".