1161610605550 has 12 divisors (see below), whose sum is σ = 2160595726416. Its totient is φ = 464644242200.

The previous prime is 1161610605511. The next prime is 1161610605553. The reversal of 1161610605550 is 555060161611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161610605553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11616106006 + ... + 11616106105.

It is an arithmetic number, because the mean of its divisors is an integer number (180049643868).

Almost surely, 2^{1161610605550} is an apocalyptic number.

1161610605550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161610605550 is a deficient number, since it is larger than the sum of its proper divisors (998985120866).

1161610605550 is a wasteful number, since it uses less digits than its factorization.

1161610605550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23232212123 (or 23232212118 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 1161610605550 in words is "one trillion, one hundred sixty-one billion, six hundred ten million, six hundred five thousand, five hundred fifty".