10691039261 has 16 divisors (see below), whose sum is σ = 12340922880. Its totient is φ = 9071948160.

The previous prime is 10691039257. The next prime is 10691039291. The reversal of 10691039261 is 16293019601.

10691039261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10691039261 - 2² = 10691039257 is a prime.

It is a super-2 number, since 2×10691039261² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10691039201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002620 + ... + 1013226.

It is an arithmetic number, because the mean of its divisors is an integer number (771307680).

Almost surely, 2^10691039261 is an apocalyptic number.

It is an amenable number.

10691039261 is a deficient number, since it is larger than the sum of its proper divisors (1649883619).

10691039261 is a wasteful number, since it uses less digits than its factorization.

10691039261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12044.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 10691039261 in words is "ten billion, six hundred ninety-one million, thirty-nine thousand, two hundred sixty-one".