10140043664646 has 24 divisors (see below), whose sum is σ = 25108679550864. Its totient is φ = 2897155332720.

The previous prime is 10140043664629. The next prime is 10140043664651. The reversal of 10140043664646 is 64646634004101.

It is a happy number.

10140043664646 is a `hidden beast` number, since 1 + 0 + 140 + 0 + 43 + 6 + 6 + 464 + 6 = 666.

10140043664646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40238268385 + ... + 40238268636.

It is an arithmetic number, because the mean of its divisors is an integer number (1046194981286).

Almost surely, 2^{10140043664646} is an apocalyptic number.

10140043664646 is an abundant number, since it is smaller than the sum of its proper divisors (14968635886218).

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

10140043664646 is a wasteful number, since it uses less digits than its factorization.

10140043664646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80476537036 (or 80476537033 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

Adding to 10140043664646 its reverse (64646634004101), we get a palindrome (74786677668747).

The spelling of 10140043664646 in words is "ten trillion, one hundred forty billion, forty-three million, six hundred sixty-four thousand, six hundred forty-six".