10521544554243 has 24 divisors (see below), whose sum is σ = 15248176398000. Its totient is φ = 6991134283584.

The previous prime is 10521544554233. The next prime is 10521544554247. The reversal of 10521544554243 is 34245544512501.

10521544554243 is a `hidden beast` number, since 1 + 0 + 5 + 2 + 1 + 54 + 4 + 554 + 2 + 43 = 666.

It is not a de Polignac number, because 10521544554243 - 2⁹ = 10521544553731 is a prime.

It is a super-2 number, since 2×10521544554243² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10521544554247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3328933 + ... + 5667881.

It is an arithmetic number, because the mean of its divisors is an integer number (635340683250).

Almost surely, 2^{10521544554243} is an apocalyptic number.

10521544554243 is a deficient number, since it is larger than the sum of its proper divisors (4726631843757).

10521544554243 is a wasteful number, since it uses less digits than its factorization.

10521544554243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340611 (or 2340608 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 45.

The spelling of 10521544554243 in words is "ten trillion, five hundred twenty-one billion, five hundred forty-four million, five hundred fifty-four thousand, two hundred forty-three".