11407744081 has 4 divisors (see below), whose sum is σ = 11408906164. Its totient is φ = 11406582000.

The previous prime is 11407744067. The next prime is 11407744121. The reversal of 11407744081 is 18044770411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10835769025 + 571975056 = 104095^2 + 23916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11407744081 is a prime.

It is a super-2 number, since 2×11407744081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11407744081.

It is not an unprimeable number, because it can be changed into a prime (11407744981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566190 + ... + 585991.

It is an arithmetic number, because the mean of its divisors is an integer number (2852226541).

Almost surely, 2^11407744081 is an apocalyptic number.

It is an amenable number.

11407744081 is a deficient number, since it is larger than the sum of its proper divisors (1162083).

11407744081 is an equidigital number, since it uses as much as digits as its factorization.

11407744081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162082.

The product of its (nonzero) digits is 25088, while the sum is 37.

The spelling of 11407744081 in words is "eleven billion, four hundred seven million, seven hundred forty-four thousand, eighty-one".