10161605550 has 24 divisors (see below), whose sum is σ = 25200782136. Its totient is φ = 2709761440.

The previous prime is 10161605533. The next prime is 10161605563. The reversal of 10161605550 is 5550616101.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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, 33871869 + ... + 33872168.

It is an arithmetic number, because the mean of its divisors is an integer number (1050032589).

Almost surely, 2^10161605550 is an apocalyptic number.

10161605550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10161605550 is an abundant number, since it is smaller than the sum of its proper divisors (15039176586).

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

10161605550 is a wasteful number, since it uses less digits than its factorization.

10161605550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67744052 (or 67744047 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 10161605550 in words is "ten billion, one hundred sixty-one million, six hundred five thousand, five hundred fifty".