21473160513 has 16 divisors (see below), whose sum is σ = 34645772160. Its totient is φ = 11548590336.

The previous prime is 21473160487. The next prime is 21473160521. The reversal of 21473160513 is 31506137412.

It is not a de Polignac number, because 21473160513 - 2⁵ = 21473160481 is a prime.

It is a super-2 number, since 2×21473160513² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21473160013) 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, 30074098 + ... + 30074811.

It is an arithmetic number, because the mean of its divisors is an integer number (2165360760).

Almost surely, 2^21473160513 is an apocalyptic number.

It is an amenable number.

21473160513 is a deficient number, since it is larger than the sum of its proper divisors (13172611647).

21473160513 is a wasteful number, since it uses less digits than its factorization.

21473160513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60148936.

The product of its (nonzero) digits is 15120, while the sum is 33.

Adding to 21473160513 its reverse (31506137412), we get a palindrome (52979297925).

The spelling of 21473160513 in words is "twenty-one billion, four hundred seventy-three million, one hundred sixty thousand, five hundred thirteen".