144428715873 has 32 divisors (see below), whose sum is σ = 230925524480. Its totient is φ = 88687146240.

The previous prime is 144428715857. The next prime is 144428715917. The reversal of 144428715873 is 378517824441.

144428715873 is a `hidden beast` number, since 1 + 4 + 442 + 87 + 1 + 58 + 73 = 666.

It is not a de Polignac number, because 144428715873 - 2⁴ = 144428715857 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144428715853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281848 + ... + 606873.

It is an arithmetic number, because the mean of its divisors is an integer number (7216422640).

Almost surely, 2^144428715873 is an apocalyptic number.

144428715873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

144428715873 is a deficient number, since it is larger than the sum of its proper divisors (86496808607).

144428715873 is a wasteful number, since it uses less digits than its factorization.

144428715873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889206 (or 889200 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 54.

The spelling of 144428715873 in words is "one hundred forty-four billion, four hundred twenty-eight million, seven hundred fifteen thousand, eight hundred seventy-three".