1061105605550 has 24 divisors (see below), whose sum is σ = 2077533082200. Its totient is φ = 402103176480.

The previous prime is 1061105605537. The next prime is 1061105605561. The reversal of 1061105605550 is 555065011601.

It is a super-2 number, since 2×1061105605550² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1061105605550.

It is a congruent number.

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, 558475685 + ... + 558477584.

It is an arithmetic number, because the mean of its divisors is an integer number (86563878425).

Almost surely, 2^{1061105605550} is an apocalyptic number.

1061105605550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1061105605550 is a deficient number, since it is larger than the sum of its proper divisors (1016427476650).

1061105605550 is a wasteful number, since it uses less digits than its factorization.

1061105605550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116953300 (or 1116953295 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 1061105605550 in words is "one trillion, sixty-one billion, one hundred five million, six hundred five thousand, five hundred fifty".