402440201011 has 4 divisors (see below), whose sum is σ = 402526510672. Its totient is φ = 402353891352.

The previous prime is 402440200999. The next prime is 402440201027. The reversal of 402440201011 is 110102044204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402440201011 is a prime.

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 402440201011.

It is not an unprimeable number, because it can be changed into a prime (402440201071) 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, 43147836 + ... + 43157161.

It is an arithmetic number, because the mean of its divisors is an integer number (100631627668).

Almost surely, 2^402440201011 is an apocalyptic number.

402440201011 is a deficient number, since it is larger than the sum of its proper divisors (86309661).

402440201011 is an equidigital number, since it uses as much as digits as its factorization.

402440201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86309660.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 402440201011 its reverse (110102044204), we get a palindrome (512542245215).

The spelling of 402440201011 in words is "four hundred two billion, four hundred forty million, two hundred one thousand, eleven".