1655104522201 has 4 divisors (see below), whose sum is σ = 1782420254692. Its totient is φ = 1527788789712.

The previous prime is 1655104522157. The next prime is 1655104522237. The reversal of 1655104522201 is 1022254015561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88789696576 + 1566314825625 = 297976^2 + 1251525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655104522201 - 2²⁷ = 1654970304473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655104528201) 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 3 ways as a sum of consecutive naturals, for example, 63657866226 + ... + 63657866251.

It is an arithmetic number, because the mean of its divisors is an integer number (445605063673).

Almost surely, 2^{1655104522201} is an apocalyptic number.

It is an amenable number.

1655104522201 is a deficient number, since it is larger than the sum of its proper divisors (127315732491).

1655104522201 is a wasteful number, since it uses less digits than its factorization.

1655104522201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127315732490.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 1655104522201 its reverse (1022254015561), we get a palindrome (2677358537762).

The spelling of 1655104522201 in words is "one trillion, six hundred fifty-five billion, one hundred four million, five hundred twenty-two thousand, two hundred one".