10091040261 has 4 divisors (see below), whose sum is σ = 13454720352. Its totient is φ = 6727360172.

The previous prime is 10091040257. The next prime is 10091040293. The reversal of 10091040261 is 16204019001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16204019001 = 3 ⋅5401339667.

It is a cyclic number.

It is not a de Polignac number, because 10091040261 - 2² = 10091040257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10091040221) 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, 1681840041 + ... + 1681840046.

It is an arithmetic number, because the mean of its divisors is an integer number (3363680088).

Almost surely, 2^10091040261 is an apocalyptic number.

It is an amenable number.

10091040261 is a deficient number, since it is larger than the sum of its proper divisors (3363680091).

10091040261 is an equidigital number, since it uses as much as digits as its factorization.

10091040261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363680090.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 10091040261 its reverse (16204019001), we get a palindrome (26295059262).

The spelling of 10091040261 in words is "ten billion, ninety-one million, forty thousand, two hundred sixty-one".