144915694568 has 8 divisors (see below), whose sum is σ = 271716927330. Its totient is φ = 72457847280.

The previous prime is 144915694543. The next prime is 144915694613. The reversal of 144915694568 is 865496519441.

It can be written as a sum of positive squares in only one way, i.e., 121897343044 + 23018351524 = 349138^2 + 151718^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 144915694568.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9057230903 + ... + 9057230918.

Almost surely, 2^144915694568 is an apocalyptic number.

It is an amenable number.

144915694568 is a deficient number, since it is larger than the sum of its proper divisors (126801232762).

144915694568 is a wasteful number, since it uses less digits than its factorization.

144915694568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114461827 (or 18114461823 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 62.

The spelling of 144915694568 in words is "one hundred forty-four billion, nine hundred fifteen million, six hundred ninety-four thousand, five hundred sixty-eight".