10453144640 has 28 divisors (see below), whose sum is σ = 24891551436. Its totient is φ = 4181257728.

The previous prime is 10453144631. The next prime is 10453144657. The reversal of 10453144640 is 4644135401.

It can be written as a sum of positive squares in 2 ways, for example, as 4185572416 + 6267572224 = 64696^2 + 79168^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 10453144597 and 10453144606.

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, 16332719 + ... + 16333358.

Almost surely, 2^10453144640 is an apocalyptic number.

10453144640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10453144640 is an abundant number, since it is smaller than the sum of its proper divisors (14438406796).

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

10453144640 is an equidigital number, since it uses as much as digits as its factorization.

10453144640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32666094 (or 32666084 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 10453144640 in words is "ten billion, four hundred fifty-three million, one hundred forty-four thousand, six hundred forty".