10635649920 has 960 divisors, whose sum is σ = 45586411200. Its totient is φ = 2354946048.

The previous prime is 10635649907. The next prime is 10635649933. The reversal of 10635649920 is 2994653601.

10635649920 is a `hidden beast` number, since 1 + 0 + 63 + 564 + 9 + 9 + 20 = 666.

10635649920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10635649907) and next prime (10635649933).

It is a tau number, because it is divible by the number of its divisors (960).

It is a super-2 number, since 2×10635649920² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 134628441 + ... + 134628519.

It is an arithmetic number, because the mean of its divisors is an integer number (47485845).

Almost surely, 2^10635649920 is an apocalyptic number.

10635649920 is a gapful number since it is divisible by the number (10) 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 10635649920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22793205600).

10635649920 is an abundant number, since it is smaller than the sum of its proper divisors (34950761280).

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

10635649920 is an equidigital number, since it uses as much as digits as its factorization.

10635649920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 10635649920 in words is "ten billion, six hundred thirty-five million, six hundred forty-nine thousand, nine hundred twenty".