144565616644 has 12 divisors (see below), whose sum is σ = 253209255964. Its totient is φ = 72220114944.

The previous prime is 144565616567. The next prime is 144565616653. The reversal of 144565616644 is 446616565441.

It can be written as a sum of positive squares in 2 ways, for example, as 128406122244 + 16159494400 = 358338^2 + 127120^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144565616591 and 144565616600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15668157 + ... + 15677380.

Almost surely, 2^144565616644 is an apocalyptic number.

It is an amenable number.

144565616644 is a deficient number, since it is larger than the sum of its proper divisors (108643639320).

144565616644 is a wasteful number, since it uses less digits than its factorization.

144565616644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31346694 (or 31346692 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 52.

The spelling of 144565616644 in words is "one hundred forty-four billion, five hundred sixty-five million, six hundred sixteen thousand, six hundred forty-four".