144151575561 has 60 divisors (see below), whose sum is σ = 261385926912. Its totient is φ = 78790873392.

The previous prime is 144151575559. The next prime is 144151575569. The reversal of 144151575561 is 165575151441.

144151575561 is a `hidden beast` number, since 1 + 4 + 4 + 1 + 5 + 15 + 75 + 561 = 666.

It is not a de Polignac number, because 144151575561 - 2¹ = 144151575559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144151575569) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 698265 + ... + 880838.

Almost surely, 2^144151575561 is an apocalyptic number.

It is an amenable number.

144151575561 is a deficient number, since it is larger than the sum of its proper divisors (117234351351).

144151575561 is a wasteful number, since it uses less digits than its factorization.

144151575561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579152 (or 1579136 counting only the distinct ones).

The product of its digits is 420000, while the sum is 45.

The spelling of 144151575561 in words is "one hundred forty-four billion, one hundred fifty-one million, five hundred seventy-five thousand, five hundred sixty-one".