145714288721 has 2 divisors, whose sum is σ = 145714288722. Its totient is φ = 145714288720.

The previous prime is 145714288669. The next prime is 145714288771. The reversal of 145714288721 is 127882417541.

It is an a-pointer prime, because the next prime (145714288771) can be obtained adding 145714288721 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144011901121 + 1702387600 = 379489^2 + 41260^2 .

It is a cyclic number.

It is not a de Polignac number, because 145714288721 - 2²² = 145710094417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145714288721.

It is not a weakly prime, because it can be changed into another prime (145714288771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72857144360 + 72857144361.

It is an arithmetic number, because the mean of its divisors is an integer number (72857144361).

Almost surely, 2^145714288721 is an apocalyptic number.

It is an amenable number.

145714288721 is a deficient number, since it is larger than the sum of its proper divisors (1).

145714288721 is an equidigital number, since it uses as much as digits as its factorization.

145714288721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1003520, while the sum is 50.

The spelling of 145714288721 in words is "one hundred forty-five billion, seven hundred fourteen million, two hundred eighty-eight thousand, seven hundred twenty-one".