145702591457 has 4 divisors (see below), whose sum is σ = 145704530196. Its totient is φ = 145700652720.

The previous prime is 145702591421. The next prime is 145702591471. The reversal of 145702591457 is 754195207541.

145702591457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117620875681 + 28081715776 = 342959^2 + 167576^2 .

It is a cyclic number.

It is not a de Polignac number, because 145702591457 - 2⁸ = 145702591201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145702590457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851894 + ... + 1008527.

It is an arithmetic number, because the mean of its divisors is an integer number (36426132549).

Almost surely, 2^145702591457 is an apocalyptic number.

It is an amenable number.

145702591457 is a deficient number, since it is larger than the sum of its proper divisors (1938739).

145702591457 is an equidigital number, since it uses as much as digits as its factorization.

145702591457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938738.

The product of its (nonzero) digits is 1764000, while the sum is 50.

Adding to 145702591457 its reverse (754195207541), we get a palindrome (899897798998).

The spelling of 145702591457 in words is "one hundred forty-five billion, seven hundred two million, five hundred ninety-one thousand, four hundred fifty-seven".