10644512740 has 12 divisors (see below), whose sum is σ = 22353476796. Its totient is φ = 4257805088.

The previous prime is 10644512737. The next prime is 10644512741. The reversal of 10644512740 is 4721544601.

It can be written as a sum of positive squares in 2 ways, for example, as 1485639936 + 9158872804 = 38544^2 + 95702^2 .

It is a super-2 number, since 2×10644512740² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10644512696 and 10644512705.

It is not an unprimeable number, because it can be changed into a prime (10644512741) 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, 266112799 + ... + 266112838.

It is an arithmetic number, because the mean of its divisors is an integer number (1862789733).

Almost surely, 2^10644512740 is an apocalyptic number.

10644512740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10644512740 is an abundant number, since it is smaller than the sum of its proper divisors (11708964056).

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

10644512740 is a wasteful number, since it uses less digits than its factorization.

10644512740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532225646 (or 532225644 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 10644512740 in words is "ten billion, six hundred forty-four million, five hundred twelve thousand, seven hundred forty".