16513520130261 has 48 divisors (see below), whose sum is σ = 29771278737408. Its totient is φ = 8569035165600.

The previous prime is 16513520130221. The next prime is 16513520130311. The reversal of 16513520130261 is 16203102531561.

16513520130261 is a `hidden beast` number, since 1 + 6 + 513 + 5 + 2 + 0 + 130 + 2 + 6 + 1 = 666.

It is not a de Polignac number, because 16513520130261 - 2¹⁷ = 16513519999189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16513520130221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12447181 + ... + 13709826.

It is an arithmetic number, because the mean of its divisors is an integer number (620234973696).

Almost surely, 2^{16513520130261} is an apocalyptic number.

16513520130261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16513520130261 is a deficient number, since it is larger than the sum of its proper divisors (13257758607147).

16513520130261 is a wasteful number, since it uses less digits than its factorization.

16513520130261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26157942 (or 26157939 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 16513520130261 in words is "sixteen trillion, five hundred thirteen billion, five hundred twenty million, one hundred thirty thousand, two hundred sixty-one".