10401332261 has 2 divisors, whose sum is σ = 10401332262. Its totient is φ = 10401332260.

The previous prime is 10401332243. The next prime is 10401332363. The reversal of 10401332261 is 16223310401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10301032036 + 100300225 = 101494^2 + 10015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10401332261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10401332231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200666130 + 5200666131.

It is an arithmetic number, because the mean of its divisors is an integer number (5200666131).

Almost surely, 2^10401332261 is an apocalyptic number.

It is an amenable number.

10401332261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10401332261 is an equidigital number, since it uses as much as digits as its factorization.

10401332261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 10401332261 its reverse (16223310401), we get a palindrome (26624642662).

The spelling of 10401332261 in words is "ten billion, four hundred one million, three hundred thirty-two thousand, two hundred sixty-one".