10515321473 has 4 divisors (see below), whose sum is σ = 10515601668. Its totient is φ = 10515041280.

The previous prime is 10515321469. The next prime is 10515321511. The reversal of 10515321473 is 37412351501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37412351501 = 7 ⋅5344621643.

It can be written as a sum of positive squares in 2 ways, for example, as 8113145329 + 2402176144 = 90073^2 + 49012^2 .

It is a cyclic number.

It is not a de Polignac number, because 10515321473 - 2² = 10515321469 is a prime.

It is a super-2 number, since 2×10515321473² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10515321413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73136 + ... + 162417.

It is an arithmetic number, because the mean of its divisors is an integer number (2628900417).

Almost surely, 2^10515321473 is an apocalyptic number.

It is an amenable number.

10515321473 is a deficient number, since it is larger than the sum of its proper divisors (280195).

10515321473 is an equidigital number, since it uses as much as digits as its factorization.

10515321473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280194.

The product of its (nonzero) digits is 12600, while the sum is 32.

Adding to 10515321473 its reverse (37412351501), we get a palindrome (47927672974).

The spelling of 10515321473 in words is "ten billion, five hundred fifteen million, three hundred twenty-one thousand, four hundred seventy-three".