10661042145 has 32 divisors (see below), whose sum is σ = 18381686400. Its totient is φ = 5245115904.

The previous prime is 10661042143. The next prime is 10661042149. The reversal of 10661042145 is 54124016601.

It is not a de Polignac number, because 10661042145 - 2¹ = 10661042143 is a prime.

It is a super-2 number, since 2×10661042145² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10661042143) 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, 298821 + ... + 332589.

It is an arithmetic number, because the mean of its divisors is an integer number (574427700).

Almost surely, 2^10661042145 is an apocalyptic number.

10661042145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10661042145 is a deficient number, since it is larger than the sum of its proper divisors (7720644255).

10661042145 is a wasteful number, since it uses less digits than its factorization.

10661042145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35409.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 10661042145 its reverse (54124016601), we get a palindrome (64785058746).

The spelling of 10661042145 in words is "ten billion, six hundred sixty-one million, forty-two thousand, one hundred forty-five".