10644363456 has 28 divisors (see below), whose sum is σ = 28163212152. Its totient is φ = 3548121088.

The previous prime is 10644363451. The next prime is 10644363467. The reversal of 10644363456 is 65436344601.

It is a super-2 number, since 2×10644363456² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10644363451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27719505 + ... + 27719888.

Almost surely, 2^10644363456 is an apocalyptic number.

10644363456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10644363456 is an abundant number, since it is smaller than the sum of its proper divisors (17518848696).

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

10644363456 is an equidigital number, since it uses as much as digits as its factorization.

10644363456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55439408 (or 55439398 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 10644363456 in words is "ten billion, six hundred forty-four million, three hundred sixty-three thousand, four hundred fifty-six".