10661560049 has 8 divisors (see below), whose sum is σ = 12186187968. Its totient is φ = 9137319120.

The previous prime is 10661560037. The next prime is 10661560109. The reversal of 10661560049 is 94006516601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10661560049 is a prime.

It is a super-2 number, since 2×10661560049² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10661559994 and 10661560021.

It is not an unprimeable number, because it can be changed into a prime (10661562049) 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 7 ways as a sum of consecutive naturals, for example, 35087 + ... + 150180.

It is an arithmetic number, because the mean of its divisors is an integer number (1523273496).

Almost surely, 2^10661560049 is an apocalyptic number.

It is an amenable number.

10661560049 is a deficient number, since it is larger than the sum of its proper divisors (1524627919).

10661560049 is an equidigital number, since it uses as much as digits as its factorization.

10661560049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193495.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 10661560049 in words is "ten billion, six hundred sixty-one million, five hundred sixty thousand, forty-nine".