145331505253 has 16 divisors (see below), whose sum is σ = 162484761600. Its totient is φ = 128875434480.

The previous prime is 145331505251. The next prime is 145331505281. The reversal of 145331505253 is 352505133541.

145331505253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 145331505253 - 2¹ = 145331505251 is a prime.

It is a super-2 number, since 2×145331505253² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145331505251) 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 15 ways as a sum of consecutive naturals, for example, 935343 + ... + 1079596.

It is an arithmetic number, because the mean of its divisors is an integer number (10155297600).

Almost surely, 2^145331505253 is an apocalyptic number.

It is an amenable number.

145331505253 is a deficient number, since it is larger than the sum of its proper divisors (17153256347).

145331505253 is a wasteful number, since it uses less digits than its factorization.

145331505253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015112.

The product of its (nonzero) digits is 135000, while the sum is 37.

Adding to 145331505253 its reverse (352505133541), we get a palindrome (497836638794).

The spelling of 145331505253 in words is "one hundred forty-five billion, three hundred thirty-one million, five hundred five thousand, two hundred fifty-three".