145555137439 has 2 divisors, whose sum is σ = 145555137440. Its totient is φ = 145555137438.

The previous prime is 145555137353. The next prime is 145555137443. The reversal of 145555137439 is 934731555541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145555137439 - 2⁷ = 145555137311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145555137449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72777568719 + 72777568720.

It is an arithmetic number, because the mean of its divisors is an integer number (72777568720).

Almost surely, 2^145555137439 is an apocalyptic number.

145555137439 is a deficient number, since it is larger than the sum of its proper divisors (1).

145555137439 is an equidigital number, since it uses as much as digits as its factorization.

145555137439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670000, while the sum is 52.

The spelling of 145555137439 in words is "one hundred forty-five billion, five hundred fifty-five million, one hundred thirty-seven thousand, four hundred thirty-nine".