407665661233 has 4 divisors (see below), whose sum is σ = 407666969380. Its totient is φ = 407664353088.

The previous prime is 407665661177. The next prime is 407665661297. The reversal of 407665661233 is 332166566704.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 354872786944 + 52792874289 = 595712^2 + 229767^2 .

It is a cyclic number.

It is not a de Polignac number, because 407665661233 - 2¹³ = 407665653041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (407665661933) 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, 114133 + ... + 910141.

It is an arithmetic number, because the mean of its divisors is an integer number (101916742345).

Almost surely, 2^407665661233 is an apocalyptic number.

It is an amenable number.

407665661233 is a deficient number, since it is larger than the sum of its proper divisors (1308147).

407665661233 is an equidigital number, since it uses as much as digits as its factorization.

407665661233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308146.

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 407665661233 in words is "four hundred seven billion, six hundred sixty-five million, six hundred sixty-one thousand, two hundred thirty-three".