2145116497 has 2 divisors, whose sum is σ = 2145116498. Its totient is φ = 2145116496.

The previous prime is 2145116483. The next prime is 2145116521. The reversal of 2145116497 is 7946115412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1142507601 + 1002608896 = 33801^2 + 31664^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145116497 - 2¹⁵ = 2145083729 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145117497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072558248 + 1072558249.

It is an arithmetic number, because the mean of its divisors is an integer number (1072558249).

Almost surely, 2^2145116497 is an apocalyptic number.

It is an amenable number.

2145116497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145116497 is an equidigital number, since it uses as much as digits as its factorization.

2145116497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 2145116497 is about 46315.4023732926. The cubic root of 2145116497 is about 1289.6849373791.

The spelling of 2145116497 in words is "two billion, one hundred forty-five million, one hundred sixteen thousand, four hundred ninety-seven".