10555049985 has 16 divisors (see below), whose sum is σ = 16895583936. Its totient is φ = 5626858688.

The previous prime is 10555049983. The next prime is 10555050017. The reversal of 10555049985 is 58994055501.

It is a cyclic number.

It is not a de Polignac number, because 10555049985 - 2¹ = 10555049983 is a prime.

It is a super-2 number, since 2×10555049985² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10555049983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121194 + ... + 189203.

It is an arithmetic number, because the mean of its divisors is an integer number (1055973996).

Almost surely, 2^10555049985 is an apocalyptic number.

10555049985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10555049985 is a deficient number, since it is larger than the sum of its proper divisors (6340533951).

10555049985 is a wasteful number, since it uses less digits than its factorization.

10555049985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312672.

The product of its (nonzero) digits is 1620000, while the sum is 51.

The spelling of 10555049985 in words is "ten billion, five hundred fifty-five million, forty-nine thousand, nine hundred eighty-five".