240144987279 has 4 divisors (see below), whose sum is σ = 320193316376. Its totient is φ = 160096658184.

The previous prime is 240144987233. The next prime is 240144987307. The reversal of 240144987279 is 972789441042.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 240144987279 - 2⁷ = 240144987151 is a prime.

It is a super-2 number, since 2×240144987279² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240144982279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40024164544 + ... + 40024164549.

It is an arithmetic number, because the mean of its divisors is an integer number (80048329094).

Almost surely, 2^240144987279 is an apocalyptic number.

240144987279 is a deficient number, since it is larger than the sum of its proper divisors (80048329097).

240144987279 is an equidigital number, since it uses as much as digits as its factorization.

240144987279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80048329096.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 240144987279 in words is "two hundred forty billion, one hundred forty-four million, nine hundred eighty-seven thousand, two hundred seventy-nine".