145427538647 has 2 divisors, whose sum is σ = 145427538648. Its totient is φ = 145427538646.

The previous prime is 145427538637. The next prime is 145427538689. The reversal of 145427538647 is 746835724541.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145427538647 - 2²² = 145423344343 is a prime.

It is a super-2 number, since 2×145427538647² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145427538592 and 145427538601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145427538637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72713769323 + 72713769324.

It is an arithmetic number, because the mean of its divisors is an integer number (72713769324).

Almost surely, 2^145427538647 is an apocalyptic number.

145427538647 is a deficient number, since it is larger than the sum of its proper divisors (1).

145427538647 is an equidigital number, since it uses as much as digits as its factorization.

145427538647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22579200, while the sum is 56.

The spelling of 145427538647 in words is "one hundred forty-five billion, four hundred twenty-seven million, five hundred thirty-eight thousand, six hundred forty-seven".