10521511115345 has 16 divisors (see below), whose sum is σ = 13192493697792. Its totient is φ = 8040407094720.

The previous prime is 10521511115327. The next prime is 10521511115411. The reversal of 10521511115345 is 54351111512501.

It is not a de Polignac number, because 10521511115345 - 2¹⁸ = 10521510853201 is a prime.

It is a super-2 number, since 2×10521511115345² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61483466 + ... + 61654355.

It is an arithmetic number, because the mean of its divisors is an integer number (824530856112).

Almost surely, 2^{10521511115345} is an apocalyptic number.

It is an amenable number.

10521511115345 is a deficient number, since it is larger than the sum of its proper divisors (2670982582447).

10521511115345 is a wasteful number, since it uses less digits than its factorization.

10521511115345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123138592.

The product of its (nonzero) digits is 15000, while the sum is 35.

Adding to 10521511115345 its reverse (54351111512501), we get a palindrome (64872622627846).

The spelling of 10521511115345 in words is "ten trillion, five hundred twenty-one billion, five hundred eleven million, one hundred fifteen thousand, three hundred forty-five".