2145320102537 has 2 divisors, whose sum is σ = 2145320102538. Its totient is φ = 2145320102536.

The previous prime is 2145320102503. The next prime is 2145320102539. The reversal of 2145320102537 is 7352010235412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2095253355001 + 50066747536 = 1447499^2 + 223756^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145320102537 - 2⁶ = 2145320102473 is a prime.

Together with 2145320102539, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145320102497 and 2145320102506.

It is not a weakly prime, because it can be changed into another prime (2145320102539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072660051268 + 1072660051269.

It is an arithmetic number, because the mean of its divisors is an integer number (1072660051269).

Almost surely, 2^{2145320102537} is an apocalyptic number.

It is an amenable number.

2145320102537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145320102537 is an equidigital number, since it uses as much as digits as its factorization.

2145320102537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 35.

Adding to 2145320102537 its reverse (7352010235412), we get a palindrome (9497330337949).

The spelling of 2145320102537 in words is "two trillion, one hundred forty-five billion, three hundred twenty million, one hundred two thousand, five hundred thirty-seven".