1142354185581 has 64 divisors (see below), whose sum is σ = 1772193761280. Its totient is φ = 641095430400.

The previous prime is 1142354185499. The next prime is 1142354185649. The reversal of 1142354185581 is 1855814532411.

It is not a de Polignac number, because 1142354185581 - 2⁹ = 1142354185069 is a prime.

It is a super-2 number, since 2×1142354185581² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142354185581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142354185081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194639115 + ... + 194644983.

It is an arithmetic number, because the mean of its divisors is an integer number (27690527520).

Almost surely, 2^{1142354185581} is an apocalyptic number.

It is an amenable number.

1142354185581 is a deficient number, since it is larger than the sum of its proper divisors (629839575699).

1142354185581 is a wasteful number, since it uses less digits than its factorization.

1142354185581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706.

The product of its digits is 768000, while the sum is 48.

The spelling of 1142354185581 in words is "one trillion, one hundred forty-two billion, three hundred fifty-four million, one hundred eighty-five thousand, five hundred eighty-one".