1566612020453 has 8 divisors (see below), whose sum is σ = 1576790880000. Its totient is φ = 1556461319328.

The previous prime is 1566612020417. The next prime is 1566612020459. The reversal of 1566612020453 is 3540202166651.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1566612020453 - 2¹⁰ = 1566612019429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1566612020453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566612020459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6927968 + ... + 7150521.

It is an arithmetic number, because the mean of its divisors is an integer number (197098860000).

Almost surely, 2^{1566612020453} is an apocalyptic number.

It is an amenable number.

1566612020453 is a deficient number, since it is larger than the sum of its proper divisors (10178859547).

1566612020453 is a wasteful number, since it uses less digits than its factorization.

1566612020453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14079211.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 1566612020453 in words is "one trillion, five hundred sixty-six billion, six hundred twelve million, twenty thousand, four hundred fifty-three".