2145545535499 has 2 divisors, whose sum is σ = 2145545535500. Its totient is φ = 2145545535498.

The previous prime is 2145545535467. The next prime is 2145545535557. The reversal of 2145545535499 is 9945355455412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145545535499 - 2⁵ = 2145545535467 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145545535439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072772767749 + 1072772767750.

It is an arithmetic number, because the mean of its divisors is an integer number (1072772767750).

Almost surely, 2^{2145545535499} is an apocalyptic number.

2145545535499 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145545535499 is an equidigital number, since it uses as much as digits as its factorization.

2145545535499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200000, while the sum is 61.

The spelling of 2145545535499 in words is "two trillion, one hundred forty-five billion, five hundred forty-five million, five hundred thirty-five thousand, four hundred ninety-nine".