146444626145 has 4 divisors (see below), whose sum is σ = 175733551380. Its totient is φ = 117155700912.

The previous prime is 146444626129. The next prime is 146444626147. The reversal of 146444626145 is 541626444641.

It is a happy number.

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 89422529296 + 57022096849 = 299036^2 + 238793^2 .

It is a cyclic number.

It is not a de Polignac number, because 146444626145 - 2⁴ = 146444626129 is a prime.

It is a super-2 number, since 2×146444626145² (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 146444626145.

It is not an unprimeable number, because it can be changed into a prime (146444626147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14644462610 + ... + 14644462619.

It is an arithmetic number, because the mean of its divisors is an integer number (43933387845).

Almost surely, 2^146444626145 is an apocalyptic number.

It is an amenable number.

146444626145 is a deficient number, since it is larger than the sum of its proper divisors (29288925235).

146444626145 is an equidigital number, since it uses as much as digits as its factorization.

146444626145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29288925234.

The product of its digits is 2211840, while the sum is 47.

The spelling of 146444626145 in words is "one hundred forty-six billion, four hundred forty-four million, six hundred twenty-six thousand, one hundred forty-five".