144774442451 has 4 divisors (see below), whose sum is σ = 145119966600. Its totient is φ = 144428918304.

The previous prime is 144774442403. The next prime is 144774442469. The reversal of 144774442451 is 154244477441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154244477441 = 109 ⋅1415086949.

It is a cyclic number.

It is not a de Polignac number, because 144774442451 - 2¹⁸ = 144774180307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144774442396 and 144774442405.

It is not an unprimeable number, because it can be changed into a prime (144774442051) 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, 172761446 + ... + 172762283.

It is an arithmetic number, because the mean of its divisors is an integer number (36279991650).

Almost surely, 2^144774442451 is an apocalyptic number.

144774442451 is a deficient number, since it is larger than the sum of its proper divisors (345524149).

144774442451 is an equidigital number, since it uses as much as digits as its factorization.

144774442451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345524148.

The product of its digits is 2007040, while the sum is 47.

The spelling of 144774442451 in words is "one hundred forty-four billion, seven hundred seventy-four million, four hundred forty-two thousand, four hundred fifty-one".