10520533115513 has 16 divisors (see below), whose sum is σ = 10848852755856. Its totient is φ = 10197468902400.

The previous prime is 10520533115453. The next prime is 10520533115549. The reversal of 10520533115513 is 31551133502501.

It can be written as a sum of positive squares in 8 ways, for example, as 3422955115129 + 7097578000384 = 1850123^2 + 2664128^2 .

It is a cyclic number.

It is not a de Polignac number, because 10520533115513 - 2¹⁴ = 10520533099129 is a prime.

It is a super-2 number, since 2×10520533115513² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10520533117513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296045 + ... + 4596597.

It is an arithmetic number, because the mean of its divisors is an integer number (678053297241).

Almost surely, 2^{10520533115513} is an apocalyptic number.

It is an amenable number.

10520533115513 is a deficient number, since it is larger than the sum of its proper divisors (328319640343).

10520533115513 is a wasteful number, since it uses less digits than its factorization.

10520533115513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301164.

The product of its (nonzero) digits is 33750, while the sum is 35.

The spelling of 10520533115513 in words is "ten trillion, five hundred twenty billion, five hundred thirty-three million, one hundred fifteen thousand, five hundred thirteen".