2145465236513 has 2 divisors, whose sum is σ = 2145465236514. Its totient is φ = 2145465236512.

The previous prime is 2145465236501. The next prime is 2145465236623. The reversal of 2145465236513 is 3156325645412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1935946652689 + 209518583824 = 1391383^2 + 457732^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145465236513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145465235513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072732618256 + 1072732618257.

It is an arithmetic number, because the mean of its divisors is an integer number (1072732618257).

Almost surely, 2^{2145465236513} is an apocalyptic number.

It is an amenable number.

2145465236513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145465236513 is an equidigital number, since it uses as much as digits as its factorization.

2145465236513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 47.

The spelling of 2145465236513 in words is "two trillion, one hundred forty-five billion, four hundred sixty-five million, two hundred thirty-six thousand, five hundred thirteen".