10143781644 has 48 divisors (see below), whose sum is σ = 24068330496. Its totient is φ = 3324451200.

The previous prime is 10143781643. The next prime is 10143781699. The reversal of 10143781644 is 44618734101.

10143781644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (10143781643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296464 + ... + 328904.

It is an arithmetic number, because the mean of its divisors is an integer number (501423552).

Almost surely, 2^10143781644 is an apocalyptic number.

It is an amenable number.

10143781644 is an abundant number, since it is smaller than the sum of its proper divisors (13924548852).

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

10143781644 is a wasteful number, since it uses less digits than its factorization.

10143781644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32886 (or 32884 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 10143781644 in words is "ten billion, one hundred forty-three million, seven hundred eighty-one thousand, six hundred forty-four".