144126869781 has 4 divisors (see below), whose sum is σ = 192169159712. Its totient is φ = 96084579852.

The previous prime is 144126869749. The next prime is 144126869797. The reversal of 144126869781 is 187968621441.

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 not a de Polignac number, because 144126869781 - 2⁵ = 144126869749 is a prime.

It is a super-2 number, since 2×144126869781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144126869741) 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, 24021144961 + ... + 24021144966.

It is an arithmetic number, because the mean of its divisors is an integer number (48042289928).

Almost surely, 2^144126869781 is an apocalyptic number.

It is an amenable number.

144126869781 is a deficient number, since it is larger than the sum of its proper divisors (48042289931).

144126869781 is an equidigital number, since it uses as much as digits as its factorization.

144126869781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48042289930.

The product of its digits is 4644864, while the sum is 57.

The spelling of 144126869781 in words is "one hundred forty-four billion, one hundred twenty-six million, eight hundred sixty-nine thousand, seven hundred eighty-one".