11451771712 has 28 divisors (see below), whose sum is σ = 22728025156. Its totient is φ = 5725025280.

The previous prime is 11451771703. The next prime is 11451771719. The reversal of 11451771712 is 21717715411.

It can be written as a sum of positive squares in 2 ways, for example, as 2016369216 + 9435402496 = 44904^2 + 97136^2 .

It is a super-2 number, since 2×11451771712² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451771719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765262 + ... + 780082.

Almost surely, 2^11451771712 is an apocalyptic number.

It is an amenable number.

11451771712 is a deficient number, since it is larger than the sum of its proper divisors (11276253444).

11451771712 is a wasteful number, since it uses less digits than its factorization.

11451771712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26906 (or 26896 counting only the distinct ones).

The product of its digits is 13720, while the sum is 37.

The spelling of 11451771712 in words is "eleven billion, four hundred fifty-one million, seven hundred seventy-one thousand, seven hundred twelve".