2066515422157 has 2 divisors, whose sum is σ = 2066515422158. Its totient is φ = 2066515422156.

The previous prime is 2066515422089. The next prime is 2066515422221. The reversal of 2066515422157 is 7512245156602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2066150382921 + 365039236 = 1437411^2 + 19106^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066515422157 - 2³¹ = 2064367938509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066515425157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033257711078 + 1033257711079.

It is an arithmetic number, because the mean of its divisors is an integer number (1033257711079).

Almost surely, 2^{2066515422157} is an apocalyptic number.

It is an amenable number.

2066515422157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066515422157 is an equidigital number, since it uses as much as digits as its factorization.

2066515422157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 2066515422157 in words is "two trillion, sixty-six billion, five hundred fifteen million, four hundred twenty-two thousand, one hundred fifty-seven".