1655456545561 has 8 divisors (see below), whose sum is σ = 2037484979264. Its totient is φ = 1309811772240.

The previous prime is 1655456545541. The next prime is 1655456545661.

1655456545561 is nontrivially palindromic in base 10.

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 1655456545561 - 2²³ = 1655448156953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1655456545496 and 1655456545505.

It is not an unprimeable number, because it can be changed into a prime (1655456545541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9095914995 + ... + 9095915176.

It is an arithmetic number, because the mean of its divisors is an integer number (254685622408).

Almost surely, 2^{1655456545561} is an apocalyptic number.

It is an amenable number.

1655456545561 is a deficient number, since it is larger than the sum of its proper divisors (382028433703).

1655456545561 is a wasteful number, since it uses less digits than its factorization.

1655456545561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18191830191.

The product of its digits is 54000000, while the sum is 58.

The spelling of 1655456545561 in words is "one trillion, six hundred fifty-five billion, four hundred fifty-six million, five hundred forty-five thousand, five hundred sixty-one".