10557765108261 has 32 divisors (see below), whose sum is σ = 17875821035520. Its totient is φ = 6032927667312.

The previous prime is 10557765108227. The next prime is 10557765108343. The reversal of 10557765108261 is 16280156775501.

10557765108261 is a `hidden beast` number, since 1 + 0 + 5 + 57 + 76 + 510 + 8 + 2 + 6 + 1 = 666.

It is not a de Polignac number, because 10557765108261 - 2³¹ = 10555617624613 is a prime.

It is a super-2 number, since 2×10557765108261² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10557765108198 and 10557765108207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10557765108211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15524776 + ... + 16190558.

It is an arithmetic number, because the mean of its divisors is an integer number (558619407360).

Almost surely, 2^{10557765108261} is an apocalyptic number.

It is an amenable number.

10557765108261 is a deficient number, since it is larger than the sum of its proper divisors (7318055927259).

10557765108261 is an equidigital number, since it uses as much as digits as its factorization.

10557765108261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749702 (or 749696 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 54.

The spelling of 10557765108261 in words is "ten trillion, five hundred fifty-seven billion, seven hundred sixty-five million, one hundred eight thousand, two hundred sixty-one".