145344405252 has 24 divisors (see below), whose sum is σ = 339173958816. Its totient is φ = 48442847488.

The previous prime is 145344405233. The next prime is 145344405263. The reversal of 145344405252 is 252504443541.

145344405252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145344405252² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145344405252.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 545613 + ... + 767060.

It is an arithmetic number, because the mean of its divisors is an integer number (14132248284).

Almost surely, 2^145344405252 is an apocalyptic number.

145344405252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145344405252 is an abundant number, since it is smaller than the sum of its proper divisors (193829553564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145344405252 is a wasteful number, since it uses less digits than its factorization.

145344405252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321907 (or 1321905 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 145344405252 its reverse (252504443541), we get a palindrome (397848848793).

The spelling of 145344405252 in words is "one hundred forty-five billion, three hundred forty-four million, four hundred five thousand, two hundred fifty-two".