1655105894545 has 8 divisors (see below), whose sum is σ = 2090660077440. Its totient is φ = 1254396046320.

The previous prime is 1655105894543. The next prime is 1655105894581. The reversal of 1655105894545 is 5454985015561.

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

It is not a de Polignac number, because 1655105894545 - 2¹ = 1655105894543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1655105894545.

It is not an unprimeable number, because it can be changed into a prime (1655105894543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8711083561 + ... + 8711083750.

It is an arithmetic number, because the mean of its divisors is an integer number (261332509680).

Almost surely, 2^{1655105894545} is an apocalyptic number.

It is an amenable number.

1655105894545 is a deficient number, since it is larger than the sum of its proper divisors (435554182895).

1655105894545 is a wasteful number, since it uses less digits than its factorization.

1655105894545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17422167335.

The product of its (nonzero) digits is 21600000, while the sum is 58.

The spelling of 1655105894545 in words is "one trillion, six hundred fifty-five billion, one hundred five million, eight hundred ninety-four thousand, five hundred forty-five".