10489779550 has 12 divisors (see below), whose sum is σ = 19510990056. Its totient is φ = 4195911800.

The previous prime is 10489779511. The next prime is 10489779571. The reversal of 10489779550 is 5597798401.

It is a happy number.

It is a super-2 number, since 2×10489779550² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10489779491 and 10489779500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104897746 + ... + 104897845.

It is an arithmetic number, because the mean of its divisors is an integer number (1625915838).

Almost surely, 2^10489779550 is an apocalyptic number.

10489779550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10489779550 is a deficient number, since it is larger than the sum of its proper divisors (9021210506).

10489779550 is a wasteful number, since it uses less digits than its factorization.

10489779550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209795603 (or 209795598 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 10489779550 in words is "ten billion, four hundred eighty-nine million, seven hundred seventy-nine thousand, five hundred fifty".