10661515226 has 32 divisors (see below), whose sum is σ = 16602485760. Its totient is φ = 5129424000.

The previous prime is 10661515217. The next prime is 10661515229. The reversal of 10661515226 is 62251516601.

It is a super-2 number, since 2×10661515226² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10661515229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13376660 + ... + 13377456.

It is an arithmetic number, because the mean of its divisors is an integer number (518827680).

Almost surely, 2^10661515226 is an apocalyptic number.

10661515226 is a deficient number, since it is larger than the sum of its proper divisors (5940970534).

10661515226 is a wasteful number, since it uses less digits than its factorization.

10661515226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 10661515226 in words is "ten billion, six hundred sixty-one million, five hundred fifteen thousand, two hundred twenty-six".