10644306656240 has 80 divisors (see below), whose sum is σ = 24848792762976. Its totient is φ = 4240387200000.

The previous prime is 10644306656209. The next prime is 10644306656293. The reversal of 10644306656240 is 4265660344601.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×10644306656240² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398634890 + ... + 398661590.

Almost surely, 2^{10644306656240} is an apocalyptic number.

10644306656240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10644306656240 is an abundant number, since it is smaller than the sum of its proper divisors (14204486106736).

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

10644306656240 is a wasteful number, since it uses less digits than its factorization.

10644306656240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46818 (or 46812 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 10644306656240 in words is "ten trillion, six hundred forty-four billion, three hundred six million, six hundred fifty-six thousand, two hundred forty".