144942197915 has 16 divisors (see below), whose sum is σ = 177230539200. Its totient is φ = 113774481792.

The previous prime is 144942197909. The next prime is 144942197977. The reversal of 144942197915 is 519791249441.

It is a cyclic number.

It is not a de Polignac number, because 144942197915 - 2²⁸ = 144673762459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1234880 + ... + 1347149.

It is an arithmetic number, because the mean of its divisors is an integer number (11076908700).

Almost surely, 2^144942197915 is an apocalyptic number.

144942197915 is a deficient number, since it is larger than the sum of its proper divisors (32288341285).

144942197915 is a wasteful number, since it uses less digits than its factorization.

144942197915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582246.

The product of its digits is 3265920, while the sum is 56.

The spelling of 144942197915 in words is "one hundred forty-four billion, nine hundred forty-two million, one hundred ninety-seven thousand, nine hundred fifteen".