10661554255 has 32 divisors (see below), whose sum is σ = 14796638208. Its totient is φ = 7300886400.

The previous prime is 10661554237. The next prime is 10661554259. The reversal of 10661554255 is 55245516601.

It is a de Polignac number, because none of the positive numbers 2^k-10661554255 is a prime.

It is a super-2 number, since 2×10661554255² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661554259) 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, 21417 + ... + 147586.

It is an arithmetic number, because the mean of its divisors is an integer number (462394944).

Almost surely, 2^10661554255 is an apocalyptic number.

10661554255 is a deficient number, since it is larger than the sum of its proper divisors (4135083953).

10661554255 is a wasteful number, since it uses less digits than its factorization.

10661554255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169087.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 10661554255 in words is "ten billion, six hundred sixty-one million, five hundred fifty-four thousand, two hundred fifty-five".