145204015447 has 2 divisors, whose sum is σ = 145204015448. Its totient is φ = 145204015446.

The previous prime is 145204015417. The next prime is 145204015477. The reversal of 145204015447 is 744510402541.

It is a balanced prime because it is at equal distance from previous prime (145204015417) and next prime (145204015477).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145204015447 is a prime.

It is a super-2 number, since 2×145204015447² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145204015417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72602007723 + 72602007724.

It is an arithmetic number, because the mean of its divisors is an integer number (72602007724).

Almost surely, 2^145204015447 is an apocalyptic number.

145204015447 is a deficient number, since it is larger than the sum of its proper divisors (1).

145204015447 is an equidigital number, since it uses as much as digits as its factorization.

145204015447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89600, while the sum is 37.

Adding to 145204015447 its reverse (744510402541), we get a palindrome (889714417988).

The spelling of 145204015447 in words is "one hundred forty-five billion, two hundred four million, fifteen thousand, four hundred forty-seven".