144457472737 has 4 divisors (see below), whose sum is σ = 144459614740. Its totient is φ = 144455330736.

The previous prime is 144457472723. The next prime is 144457472741. The reversal of 144457472737 is 737274754441.

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 25421432481 + 119036040256 = 159441^2 + 345016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144457472737 is a prime.

It is a super-2 number, since 2×144457472737² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144457472717) 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, 966438 + ... + 1105855.

It is an arithmetic number, because the mean of its divisors is an integer number (36114903685).

Almost surely, 2^144457472737 is an apocalyptic number.

It is an amenable number.

144457472737 is a deficient number, since it is larger than the sum of its proper divisors (2142003).

144457472737 is an equidigital number, since it uses as much as digits as its factorization.

144457472737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142002.

The product of its digits is 18439680, while the sum is 55.

The spelling of 144457472737 in words is "one hundred forty-four billion, four hundred fifty-seven million, four hundred seventy-two thousand, seven hundred thirty-seven".