144739628461 has 4 divisors (see below), whose sum is σ = 147819195072. Its totient is φ = 141660061852.

The previous prime is 144739628443. The next prime is 144739628489. The reversal of 144739628461 is 164826937441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144739628461 - 2⁷ = 144739628333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144739628441) 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, 1539783235 + ... + 1539783328.

It is an arithmetic number, because the mean of its divisors is an integer number (36954798768).

Almost surely, 2^144739628461 is an apocalyptic number.

It is an amenable number.

144739628461 is a deficient number, since it is larger than the sum of its proper divisors (3079566611).

144739628461 is an equidigital number, since it uses as much as digits as its factorization.

144739628461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079566610.

The product of its digits is 6967296, while the sum is 55.

The spelling of 144739628461 in words is "one hundred forty-four billion, seven hundred thirty-nine million, six hundred twenty-eight thousand, four hundred sixty-one".