662155105009 has 2 divisors, whose sum is σ = 662155105010. Its totient is φ = 662155105008.

The previous prime is 662155104973. The next prime is 662155105013. The reversal of 662155105009 is 900501551266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352512937984 + 309642167025 = 593728^2 + 556455^2 .

It is a cyclic number.

It is not a de Polignac number, because 662155105009 - 2⁹ = 662155104497 is a prime.

It is not a weakly prime, because it can be changed into another prime (662155105099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331077552504 + 331077552505.

It is an arithmetic number, because the mean of its divisors is an integer number (331077552505).

Almost surely, 2^662155105009 is an apocalyptic number.

It is an amenable number.

662155105009 is a deficient number, since it is larger than the sum of its proper divisors (1).

662155105009 is an equidigital number, since it uses as much as digits as its factorization.

662155105009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 40.

The spelling of 662155105009 in words is "six hundred sixty-two billion, one hundred fifty-five million, one hundred five thousand, nine".