145534223537 has 2 divisors, whose sum is σ = 145534223538. Its totient is φ = 145534223536.

The previous prime is 145534223533. The next prime is 145534223669. The reversal of 145534223537 is 735322435541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142192343056 + 3341880481 = 377084^2 + 57809^2 .

It is a cyclic number.

It is not a de Polignac number, because 145534223537 - 2² = 145534223533 is a prime.

It is not a weakly prime, because it can be changed into another prime (145534223533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72767111768 + 72767111769.

It is an arithmetic number, because the mean of its divisors is an integer number (72767111769).

Almost surely, 2^145534223537 is an apocalyptic number.

It is an amenable number.

145534223537 is a deficient number, since it is larger than the sum of its proper divisors (1).

145534223537 is an equidigital number, since it uses as much as digits as its factorization.

145534223537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512000, while the sum is 44.

The spelling of 145534223537 in words is "one hundred forty-five billion, five hundred thirty-four million, two hundred twenty-three thousand, five hundred thirty-seven".