11040400667 has 4 divisors (see below), whose sum is σ = 11396542656. Its totient is φ = 10684258680.

The previous prime is 11040400643. The next prime is 11040400673. The reversal of 11040400667 is 76600404011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76600404011 = 76463 ⋅1001797.

It is a cyclic number.

It is not a de Polignac number, because 11040400667 - 2¹² = 11040396571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11040400687) 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, 178070948 + ... + 178071009.

It is an arithmetic number, because the mean of its divisors is an integer number (2849135664).

Almost surely, 2^11040400667 is an apocalyptic number.

11040400667 is a deficient number, since it is larger than the sum of its proper divisors (356141989).

11040400667 is an equidigital number, since it uses as much as digits as its factorization.

11040400667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356141988.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 11040400667 its reverse (76600404011), we get a palindrome (87640804678).

The spelling of 11040400667 in words is "eleven billion, forty million, four hundred thousand, six hundred sixty-seven".