10661561061049 has 8 divisors (see below), whose sum is σ = 10663509896000. Its totient is φ = 10659612411792.

The previous prime is 10661561061037. The next prime is 10661561061119. The reversal of 10661561061049 is 94016016516601.

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-10661561061049 is a prime.

It is a super-2 number, since 2×10661561061049² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10661561061449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162419167 + ... + 162484795.

It is an arithmetic number, because the mean of its divisors is an integer number (1332938737000).

Almost surely, 2^{10661561061049} is an apocalyptic number.

It is an amenable number.

10661561061049 is a deficient number, since it is larger than the sum of its proper divisors (1948834951).

10661561061049 is an equidigital number, since it uses as much as digits as its factorization.

10661561061049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92847.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 10661561061049 in words is "ten trillion, six hundred sixty-one billion, five hundred sixty-one million, sixty-one thousand, forty-nine".