1040644023532 has 6 divisors (see below), whose sum is σ = 1821127041188. Its totient is φ = 520322011764.

The previous prime is 1040644023511. The next prime is 1040644023533. The reversal of 1040644023532 is 2353204460401.

It is not an unprimeable number, because it can be changed into a prime (1040644023533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130080502938 + ... + 130080502945.

Almost surely, 2^{1040644023532} is an apocalyptic number.

It is an amenable number.

1040644023532 is a deficient number, since it is larger than the sum of its proper divisors (780483017656).

1040644023532 is a wasteful number, since it uses less digits than its factorization.

1040644023532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260161005887 (or 260161005885 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 1040644023532 its reverse (2353204460401), we get a palindrome (3393848483933).

The spelling of 1040644023532 in words is "one trillion, forty billion, six hundred forty-four million, twenty-three thousand, five hundred thirty-two".