1561344067110 has 64 divisors (see below), whose sum is σ = 3878939897280. Its totient is φ = 401742028800.

The previous prime is 1561344067099. The next prime is 1561344067117. The reversal of 1561344067110 is 117604431651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561344067117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 773310 + ... + 1928910.

It is an arithmetic number, because the mean of its divisors is an integer number (60608435895).

Almost surely, 2^{1561344067110} is an apocalyptic number.

1561344067110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1561344067110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939469948640).

1561344067110 is an abundant number, since it is smaller than the sum of its proper divisors (2317595830170).

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

1561344067110 is a wasteful number, since it uses less digits than its factorization.

1561344067110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157193.

The product of its (nonzero) digits is 60480, while the sum is 39.

Adding to 1561344067110 its reverse (117604431651), we get a palindrome (1678948498761).

The spelling of 1561344067110 in words is "one trillion, five hundred sixty-one billion, three hundred forty-four million, sixty-seven thousand, one hundred ten".