10643254344040 has 16 divisors (see below), whose sum is σ = 23947322274180. Its totient is φ = 4257301737600.

The previous prime is 10643254343999. The next prime is 10643254344059. The reversal of 10643254344040 is 4044345234601.

10643254344040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10555260240996 + 87994103044 = 3248886^2 + 296638^2 .

It is a super-2 number, since 2×10643254344040² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 266081358601 = 10643254344040 / (1 + 0 + 6 + 4 + 3 + 2 + 5 + 4 + 3 + 4 + 4 + 0 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 10643254343984 and 10643254344002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133040679261 + ... + 133040679340.

Almost surely, 2^{10643254344040} is an apocalyptic number.

10643254344040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10643254344040 is an abundant number, since it is smaller than the sum of its proper divisors (13304067930140).

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

10643254344040 is a wasteful number, since it uses less digits than its factorization.

10643254344040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266081358612 (or 266081358608 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 10643254344040 its reverse (4044345234601), we get a palindrome (14687599578641).

The spelling of 10643254344040 in words is "ten trillion, six hundred forty-three billion, two hundred fifty-four million, three hundred forty-four thousand, forty".