20613210513 has 16 divisors (see below), whose sum is σ = 31415577600. Its totient is φ = 11777113296.

The previous prime is 20613210487. The next prime is 20613210529. The reversal of 20613210513 is 31501231602.

It is not a de Polignac number, because 20613210513 - 2⁹ = 20613210001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20613210533) 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, 64206 + ... + 212952.

It is an arithmetic number, because the mean of its divisors is an integer number (1963473600).

Almost surely, 2^20613210513 is an apocalyptic number.

It is an amenable number.

20613210513 is a deficient number, since it is larger than the sum of its proper divisors (10802367087).

20613210513 is a wasteful number, since it uses less digits than its factorization.

20613210513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155356.

The product of its (nonzero) digits is 1080, while the sum is 24.

The spelling of 20613210513 in words is "twenty billion, six hundred thirteen million, two hundred ten thousand, five hundred thirteen".