1144257511665 has 8 divisors (see below), whose sum is σ = 1830812018688. Its totient is φ = 610270672880.

The previous prime is 1144257511633. The next prime is 1144257511673. The reversal of 1144257511665 is 5661157524411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1144257511665 - 2⁵ = 1144257511633 is a prime.

It is a super-2 number, since 2×1144257511665² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38141917041 + ... + 38141917070.

It is an arithmetic number, because the mean of its divisors is an integer number (228851502336).

Almost surely, 2^{1144257511665} is an apocalyptic number.

1144257511665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1144257511665 is a deficient number, since it is larger than the sum of its proper divisors (686554507023).

1144257511665 is an equidigital number, since it uses as much as digits as its factorization.

1144257511665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76283834119.

The product of its digits is 1008000, while the sum is 48.

The spelling of 1144257511665 in words is "one trillion, one hundred forty-four billion, two hundred fifty-seven million, five hundred eleven thousand, six hundred sixty-five".