144272871561 has 32 divisors (see below), whose sum is σ = 236816419840. Its totient is φ = 76080389184.

The previous prime is 144272871557. The next prime is 144272871577. The reversal of 144272871561 is 165178272441.

It is not a de Polignac number, because 144272871561 - 2² = 144272871557 is a prime.

It is a super-2 number, since 2×144272871561² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144272871561.

It is not an unprimeable number, because it can be changed into a prime (144272871511) 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, 1026810 + ... + 1158828.

It is an arithmetic number, because the mean of its divisors is an integer number (7400513120).

Almost surely, 2^144272871561 is an apocalyptic number.

It is an amenable number.

144272871561 is a deficient number, since it is larger than the sum of its proper divisors (92543548279).

144272871561 is a wasteful number, since it uses less digits than its factorization.

144272871561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136045.

The product of its digits is 752640, while the sum is 48.

The spelling of 144272871561 in words is "one hundred forty-four billion, two hundred seventy-two million, eight hundred seventy-one thousand, five hundred sixty-one".