10815799261 has 2 divisors, whose sum is σ = 10815799262. Its totient is φ = 10815799260.

The previous prime is 10815799259. The next prime is 10815799301. The reversal of 10815799261 is 16299751801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9004871236 + 1810928025 = 94894^2 + 42555^2 .

It is a cyclic number.

It is not a de Polignac number, because 10815799261 - 2¹ = 10815799259 is a prime.

It is a super-2 number, since 2×10815799261² (a number of 21 digits) contains 22 as substring.

Together with 10815799259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10815799201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5407899630 + 5407899631.

It is an arithmetic number, because the mean of its divisors is an integer number (5407899631).

Almost surely, 2^10815799261 is an apocalyptic number.

It is an amenable number.

10815799261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10815799261 is an equidigital number, since it uses as much as digits as its factorization.

10815799261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 49.

The spelling of 10815799261 in words is "ten billion, eight hundred fifteen million, seven hundred ninety-nine thousand, two hundred sixty-one".