145212058489 has 9 divisors (see below), whose sum is σ = 147655245231. Its totient is φ = 142808668920.

The previous prime is 145212058487. The next prime is 145212058501. The reversal of 145212058489 is 984850212541.

It is a happy number.

The square root of 145212058489 is 381067.

It is a perfect power (a square), and thus also a powerful number.

145212058489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4722026089 + 140490032400 = 68717^2 + 374820^2 .

It is not a de Polignac number, because 145212058489 - 2¹ = 145212058487 is a prime.

It is a super-2 number, since 2×145212058489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145212058487) 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 8 ways as a sum of consecutive naturals, for example, 23241964 + ... + 23248210.

It is an arithmetic number, because the mean of its divisors is an integer number (16406138359).

Almost surely, 2^145212058489 is an apocalyptic number.

145212058489 is the 381067-th square number.

145212058489 is the 190534-th centered octagonal number.

It is an amenable number.

145212058489 is a deficient number, since it is larger than the sum of its proper divisors (2443186742).

145212058489 is an frugal number, since it uses more digits than its factorization.

145212058489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12616 (or 6308 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 49.

Multiplying 145212058489 by its sum of digits (49), we get a square (7115390865961 = 2667469²).

The spelling of 145212058489 in words is "one hundred forty-five billion, two hundred twelve million, fifty-eight thousand, four hundred eighty-nine".