1655625582553 has 2 divisors, whose sum is σ = 1655625582554. Its totient is φ = 1655625582552.

The previous prime is 1655625582551. The next prime is 1655625582571. The reversal of 1655625582553 is 3552855265561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1598727590464 + 56897992089 = 1264408^2 + 238533^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655625582553 - 2¹ = 1655625582551 is a prime.

Together with 1655625582551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1655625582551) 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 as a sum of consecutive naturals, namely, 827812791276 + 827812791277.

It is an arithmetic number, because the mean of its divisors is an integer number (827812791277).

Almost surely, 2^{1655625582553} is an apocalyptic number.

It is an amenable number.

1655625582553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655625582553 is an equidigital number, since it uses as much as digits as its factorization.

1655625582553 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 1655625582553 in words is "one trillion, six hundred fifty-five billion, six hundred twenty-five million, five hundred eighty-two thousand, five hundred fifty-three".