10521305520531 has 64 divisors (see below), whose sum is σ = 16053266409600. Its totient is φ = 6081515790336.

The previous prime is 10521305520511. The next prime is 10521305520547. The reversal of 10521305520531 is 13502550312501.

It is a happy number.

It is not a de Polignac number, because 10521305520531 - 2⁵ = 10521305520499 is a prime.

It is a super-2 number, since 2×10521305520531² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10521305520492 and 10521305520501.

It is not an unprimeable number, because it can be changed into a prime (10521305520511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 361083195 + ... + 361112331.

It is an arithmetic number, because the mean of its divisors is an integer number (250832287650).

Almost surely, 2^{10521305520531} is an apocalyptic number.

10521305520531 is a deficient number, since it is larger than the sum of its proper divisors (5531960889069).

10521305520531 is a wasteful number, since it uses less digits than its factorization.

10521305520531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37848.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 10521305520531 in words is "ten trillion, five hundred twenty-one billion, three hundred five million, five hundred twenty thousand, five hundred thirty-one".