1235451440011 has 4 divisors (see below), whose sum is σ = 1235457374752. Its totient is φ = 1235445505272.

The previous prime is 1235451440009. The next prime is 1235451440053. The reversal of 1235451440011 is 1100441545321.

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

It is a cyclic number.

It is not a de Polignac number, because 1235451440011 - 2¹ = 1235451440009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235451440081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2643315 + ... + 3075388.

It is an arithmetic number, because the mean of its divisors is an integer number (308864343688).

Almost surely, 2^{1235451440011} is an apocalyptic number.

1235451440011 is a deficient number, since it is larger than the sum of its proper divisors (5934741).

1235451440011 is an equidigital number, since it uses as much as digits as its factorization.

1235451440011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5934740.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 1235451440011 its reverse (1100441545321), we get a palindrome (2335892985332).

The spelling of 1235451440011 in words is "one trillion, two hundred thirty-five billion, four hundred fifty-one million, four hundred forty thousand, eleven".