10661360561143 has 16 divisors (see below), whose sum is σ = 11012161818240. Its totient is φ = 10315250912736.

The previous prime is 10661360561099. The next prime is 10661360561207. The reversal of 10661360561143 is 34116506316601.

It is a cyclic number.

It is not a de Polignac number, because 10661360561143 - 2²⁵ = 10661327006711 is a prime.

It is a super-2 number, since 2×10661360561143² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10661360561143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661360561743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59894368 + ... + 60072106.

It is an arithmetic number, because the mean of its divisors is an integer number (688260113640).

Almost surely, 2^{10661360561143} is an apocalyptic number.

10661360561143 is a deficient number, since it is larger than the sum of its proper divisors (350801257097).

10661360561143 is a wasteful number, since it uses less digits than its factorization.

10661360561143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190926.

The product of its (nonzero) digits is 233280, while the sum is 43.

Adding to 10661360561143 its reverse (34116506316601), we get a palindrome (44777866877744).

The spelling of 10661360561143 in words is "ten trillion, six hundred sixty-one billion, three hundred sixty million, five hundred sixty-one thousand, one hundred forty-three".