10649039856 has 240 divisors, whose sum is σ = 35398296864. Its totient is φ = 2732341248.

The previous prime is 10649039851. The next prime is 10649039857. The reversal of 10649039856 is 65893094601.

It is a super-2 number, since 2×10649039856² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10649039799 and 10649039808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10649039851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1126606 + ... + 1136018.

Almost surely, 2^10649039856 is an apocalyptic number.

10649039856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10649039856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17699148432).

10649039856 is an abundant number, since it is smaller than the sum of its proper divisors (24749257008).

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

10649039856 is a wasteful number, since it uses less digits than its factorization.

10649039856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9488 (or 9475 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 10649039856 in words is "ten billion, six hundred forty-nine million, thirty-nine thousand, eight hundred fifty-six".