144819478861 has 4 divisors (see below), whose sum is σ = 144911663424. Its totient is φ = 144727294300.

The previous prime is 144819478849. The next prime is 144819478877. The reversal of 144819478861 is 168874918441.

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 144819478861 - 2³⁷ = 7380525389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144819478861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144819478801) 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, 46089925 + ... + 46093066.

It is an arithmetic number, because the mean of its divisors is an integer number (36227915856).

Almost surely, 2^144819478861 is an apocalyptic number.

It is an amenable number.

144819478861 is a deficient number, since it is larger than the sum of its proper divisors (92184563).

144819478861 is an equidigital number, since it uses as much as digits as its factorization.

144819478861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92184562.

The product of its digits is 12386304, while the sum is 61.

The spelling of 144819478861 in words is "one hundred forty-four billion, eight hundred nineteen million, four hundred seventy-eight thousand, eight hundred sixty-one".