11451140005 has 16 divisors (see below), whose sum is σ = 13804104240. Its totient is φ = 9119137792.

The previous prime is 11451139993. The next prime is 11451140009. The reversal of 11451140005 is 50004115411.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 116769636 + 11334370369 = 10806^2 + 106463^2 .

It is a cyclic number.

It is not a de Polignac number, because 11451140005 - 2¹⁵ = 11451107237 is a prime.

It is a super-2 number, since 2×11451140005² (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 (11451140009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3566841 + ... + 3570049.

It is an arithmetic number, because the mean of its divisors is an integer number (862756515).

Almost surely, 2^11451140005 is an apocalyptic number.

It is an amenable number.

11451140005 is a deficient number, since it is larger than the sum of its proper divisors (2352964235).

11451140005 is a wasteful number, since it uses less digits than its factorization.

11451140005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6248.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 11451140005 its reverse (50004115411), we get a palindrome (61455255416).

The spelling of 11451140005 in words is "eleven billion, four hundred fifty-one million, one hundred forty thousand, five".