144372864457 has 4 divisors (see below), whose sum is σ = 147894153876. Its totient is φ = 140851575040.

The previous prime is 144372864443. The next prime is 144372864499. The reversal of 144372864457 is 754468273441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19269881856 + 125102982601 = 138816^2 + 353699^2 .

It is a cyclic number.

It is not a de Polignac number, because 144372864457 - 2⁷ = 144372864329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144372864398 and 144372864407.

It is not an unprimeable number, because it can be changed into a prime (144372864437) 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, 1760644648 + ... + 1760644729.

It is an arithmetic number, because the mean of its divisors is an integer number (36973538469).

Almost surely, 2^144372864457 is an apocalyptic number.

It is an amenable number.

144372864457 is a deficient number, since it is larger than the sum of its proper divisors (3521289419).

144372864457 is an equidigital number, since it uses as much as digits as its factorization.

144372864457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521289418.

The product of its digits is 18063360, while the sum is 55.

The spelling of 144372864457 in words is "one hundred forty-four billion, three hundred seventy-two million, eight hundred sixty-four thousand, four hundred fifty-seven".