1662542630123 has 2 divisors, whose sum is σ = 1662542630124. Its totient is φ = 1662542630122.

The previous prime is 1662542630081. The next prime is 1662542630131. The reversal of 1662542630123 is 3210362452661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1662542630123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1662542630183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831271315061 + 831271315062.

It is an arithmetic number, because the mean of its divisors is an integer number (831271315062).

Almost surely, 2^{1662542630123} is an apocalyptic number.

1662542630123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662542630123 is an equidigital number, since it uses as much as digits as its factorization.

1662542630123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 1662542630123 in words is "one trillion, six hundred sixty-two billion, five hundred forty-two million, six hundred thirty thousand, one hundred twenty-three".