1045644121464 has 16 divisors (see below), whose sum is σ = 2614110303720. Its totient is φ = 348548040480.

The previous prime is 1045644121453. The next prime is 1045644121507. The reversal of 1045644121464 is 4641214465401.

It is a congruent number.

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, 21784252507 + ... + 21784252554.

Almost surely, 2^{1045644121464} is an apocalyptic number.

It is an amenable number.

1045644121464 is an abundant number, since it is smaller than the sum of its proper divisors (1568466182256).

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

1045644121464 is a wasteful number, since it uses less digits than its factorization.

1045644121464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43568505070 (or 43568505066 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

Adding to 1045644121464 its reverse (4641214465401), we get a palindrome (5686858586865).

The spelling of 1045644121464 in words is "one trillion, forty-five billion, six hundred forty-four million, one hundred twenty-one thousand, four hundred sixty-four".