10531520666404 has 6 divisors (see below), whose sum is σ = 18430161166214. Its totient is φ = 5265760333200.

The previous prime is 10531520666383. The next prime is 10531520666413. The reversal of 10531520666404 is 40466602513501.

It can be written as a sum of positive squares in only one way, i.e., 10209750372900 + 321770293504 = 3195270^2 + 567248^2 .

It is a super-2 number, since 2×10531520666404² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1316440083297 + ... + 1316440083304.

Almost surely, 2^{10531520666404} is an apocalyptic number.

It is an amenable number.

10531520666404 is a deficient number, since it is larger than the sum of its proper divisors (7898640499810).

10531520666404 is a wasteful number, since it uses less digits than its factorization.

10531520666404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632880166605 (or 2632880166603 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 10531520666404 in words is "ten trillion, five hundred thirty-one billion, five hundred twenty million, six hundred sixty-six thousand, four hundred four".