1016111561544 has 48 divisors (see below), whose sum is σ = 2772056203020. Its totient is φ = 336231559680.

The previous prime is 1016111561513. The next prime is 1016111561599. The reversal of 1016111561544 is 4451651116101.

1016111561544 is a `hidden beast` number, since 1 + 0 + 1 + 61 + 1 + 1 + 56 + 1 + 544 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 893898393444 + 122213168100 = 945462^2 + 349590^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1016111561499 and 1016111561508.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51496197 + ... + 51515924.

Almost surely, 2^{1016111561544} is an apocalyptic number.

It is an amenable number.

1016111561544 is an abundant number, since it is smaller than the sum of its proper divisors (1755944641476).

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

1016111561544 is a wasteful number, since it uses less digits than its factorization.

1016111561544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103012270 (or 103012263 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

Adding to 1016111561544 its reverse (4451651116101), we get a palindrome (5467762677645).

The spelling of 1016111561544 in words is "one trillion, sixteen billion, one hundred eleven million, five hundred sixty-one thousand, five hundred forty-four".