11374285581 has 6 divisors (see below), whose sum is σ = 16429523630. Its totient is φ = 7582857048.

The previous prime is 11374285579. The next prime is 11374285583. The reversal of 11374285581 is 18558247311.

11374285581 is a `hidden beast` number, since 1 + 1 + 3 + 74 + 28 + 558 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (11374285579) and next prime (11374285583).

It can be written as a sum of positive squares in only one way, i.e., 11284812900 + 89472681 = 106230^2 + 9459^2 .

It is not a de Polignac number, because 11374285581 - 2¹ = 11374285579 is a prime.

It is a super-3 number, since 3×11374285581³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11374285583) 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 5 ways as a sum of consecutive naturals, for example, 631904746 + ... + 631904763.

Almost surely, 2^11374285581 is an apocalyptic number.

It is an amenable number.

11374285581 is a deficient number, since it is larger than the sum of its proper divisors (5055238049).

11374285581 is a wasteful number, since it uses less digits than its factorization.

11374285581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263809515 (or 1263809512 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The spelling of 11374285581 in words is "eleven billion, three hundred seventy-four million, two hundred eighty-five thousand, five hundred eighty-one".