1061501510661 has 16 divisors (see below), whose sum is σ = 1499639169600. Its totient is φ = 665574029568.

The previous prime is 1061501510599. The next prime is 1061501510669. The reversal of 1061501510661 is 1660151051601.

1061501510661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1061501510661 - 2⁷ = 1061501510533 is a prime.

It is a super-2 number, since 2×1061501510661² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061501510669) 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, 7209751 + ... + 7355508.

It is an arithmetic number, because the mean of its divisors is an integer number (93727448100).

Almost surely, 2^{1061501510661} is an apocalyptic number.

It is an amenable number.

1061501510661 is a deficient number, since it is larger than the sum of its proper divisors (438137658939).

1061501510661 is a wasteful number, since it uses less digits than its factorization.

1061501510661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14566708.

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 1061501510661 in words is "one trillion, sixty-one billion, five hundred one million, five hundred ten thousand, six hundred sixty-one".