6405561453612 has 24 divisors (see below), whose sum is σ = 15732957956800. Its totient is φ = 2022808880016.

The previous prime is 6405561453601. The next prime is 6405561453659. The reversal of 6405561453612 is 2163541655046.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14047283662 + ... + 14047284117.

Almost surely, 2^{6405561453612} is an apocalyptic number.

It is an amenable number.

6405561453612 is an abundant number, since it is smaller than the sum of its proper divisors (9327396503188).

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

6405561453612 is a wasteful number, since it uses less digits than its factorization.

6405561453612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28094567805 (or 28094567803 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 6405561453612 in words is "six trillion, four hundred five billion, five hundred sixty-one million, four hundred fifty-three thousand, six hundred twelve".