10261566061 has 6 divisors (see below), whose sum is σ = 10900695050. Its totient is φ = 9657944256.

The previous prime is 10261566043. The next prime is 10261566067. The reversal of 10261566061 is 16066516201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5022556900 + 5239009161 = 70870^2 + 72381^2 .

It is not a de Polignac number, because 10261566061 - 2⁹ = 10261565549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10261566067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17753286 + ... + 17753863.

Almost surely, 2^10261566061 is an apocalyptic number.

It is an amenable number.

10261566061 is a deficient number, since it is larger than the sum of its proper divisors (639128989).

10261566061 is an equidigital number, since it uses as much as digits as its factorization.

10261566061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35507183 (or 35507166 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 10261566061 in words is "ten billion, two hundred sixty-one million, five hundred sixty-six thousand, sixty-one".