6401247233 has 2 divisors, whose sum is σ = 6401247234. Its totient is φ = 6401247232.

The previous prime is 6401247199. The next prime is 6401247247. The reversal of 6401247233 is 3327421046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6395520784 + 5726449 = 79972^2 + 2393^2 .

It is a cyclic number.

It is not a de Polignac number, because 6401247233 - 2⁸ = 6401246977 is a prime.

It is a super-2 number, since 2×6401247233² = 81951932275980312578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6401247233.

It is not a weakly prime, because it can be changed into another prime (6401247283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200623616 + 3200623617.

It is an arithmetic number, because the mean of its divisors is an integer number (3200623617).

Almost surely, 2^6401247233 is an apocalyptic number.

It is an amenable number.

6401247233 is a deficient number, since it is larger than the sum of its proper divisors (1).

6401247233 is an equidigital number, since it uses as much as digits as its factorization.

6401247233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 6401247233 is about 80007.7948265042. The cubic root of 6401247233 is about 1856.7561327523.

Adding to 6401247233 its reverse (3327421046), we get a palindrome (9728668279).

The spelling of 6401247233 in words is "six billion, four hundred one million, two hundred forty-seven thousand, two hundred thirty-three".