1144153261661 has 8 divisors (see below), whose sum is σ = 1243222560000. Its totient is φ = 1048969033920.

The previous prime is 1144153261619. The next prime is 1144153261679. The reversal of 1144153261661 is 1661623514411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144153261661 is a prime.

It is a super-3 number, since 3×1144153261661³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144153261261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971267036 + ... + 971268213.

It is an arithmetic number, because the mean of its divisors is an integer number (155402820000).

Almost surely, 2^{1144153261661} is an apocalyptic number.

It is an amenable number.

1144153261661 is a deficient number, since it is larger than the sum of its proper divisors (99069298339).

1144153261661 is a wasteful number, since it uses less digits than its factorization.

1144153261661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942535299.

The product of its digits is 103680, while the sum is 41.

The spelling of 1144153261661 in words is "one trillion, one hundred forty-four billion, one hundred fifty-three million, two hundred sixty-one thousand, six hundred sixty-one".