10561521030644 has 6 divisors (see below), whose sum is σ = 18482661803634. Its totient is φ = 5280760515320.

The previous prime is 10561521030629. The next prime is 10561521030661. The reversal of 10561521030644 is 44603012516501.

It can be written as a sum of positive squares in only one way, i.e., 5375024928100 + 5186496102544 = 2318410^2 + 2277388^2 .

It is a super-2 number, since 2×10561521030644² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10561521030598 and 10561521030607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320190128827 + ... + 1320190128834.

It is an arithmetic number, because the mean of its divisors is an integer number (3080443633939).

Almost surely, 2^{10561521030644} is an apocalyptic number.

It is an amenable number.

10561521030644 is a deficient number, since it is larger than the sum of its proper divisors (7921140772990).

10561521030644 is a wasteful number, since it uses less digits than its factorization.

10561521030644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640380257665 (or 2640380257663 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 10561521030644 in words is "ten trillion, five hundred sixty-one billion, five hundred twenty-one million, thirty thousand, six hundred forty-four".