145221116539 has 2 divisors, whose sum is σ = 145221116540. Its totient is φ = 145221116538.

The previous prime is 145221116497. The next prime is 145221116543. The reversal of 145221116539 is 935611122541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145221116539 - 2¹⁷ = 145220985467 is a prime.

It is not a weakly prime, because it can be changed into another prime (145221116549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72610558269 + 72610558270.

It is an arithmetic number, because the mean of its divisors is an integer number (72610558270).

Almost surely, 2^145221116539 is an apocalyptic number.

145221116539 is a deficient number, since it is larger than the sum of its proper divisors (1).

145221116539 is an equidigital number, since it uses as much as digits as its factorization.

145221116539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 40.

The spelling of 145221116539 in words is "one hundred forty-five billion, two hundred twenty-one million, one hundred sixteen thousand, five hundred thirty-nine".