2255565217157 has 32 divisors (see below), whose sum is σ = 2612812899840. Its totient is φ = 1907245025280.

The previous prime is 2255565217151. The next prime is 2255565217247. The reversal of 2255565217157 is 7517125655522.

It is not a de Polignac number, because 2255565217157 - 2³⁴ = 2238385347973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2255565217099 and 2255565217108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255565217151) 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 31 ways as a sum of consecutive naturals, for example, 195670928 + ... + 195682454.

It is an arithmetic number, because the mean of its divisors is an integer number (81650403120).

Almost surely, 2^{2255565217157} is an apocalyptic number.

It is an amenable number.

2255565217157 is a deficient number, since it is larger than the sum of its proper divisors (357247682683).

2255565217157 is a wasteful number, since it uses less digits than its factorization.

2255565217157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12741.

The product of its digits is 7350000, while the sum is 53.

The spelling of 2255565217157 in words is "two trillion, two hundred fifty-five billion, five hundred sixty-five million, two hundred seventeen thousand, one hundred fifty-seven".