20335129613 has 16 divisors (see below), whose sum is σ = 21541656576. Its totient is φ = 19165673520.

The previous prime is 20335129597. The next prime is 20335129621. The reversal of 20335129613 is 31692153302.

It is a cyclic number.

It is not a de Polignac number, because 20335129613 - 2⁴ = 20335129597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20335129013) 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, 440570 + ... + 484532.

It is an arithmetic number, because the mean of its divisors is an integer number (1346353536).

Almost surely, 2^20335129613 is an apocalyptic number.

It is an amenable number.

20335129613 is a deficient number, since it is larger than the sum of its proper divisors (1206526963).

20335129613 is a wasteful number, since it uses less digits than its factorization.

20335129613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44384.

The product of its (nonzero) digits is 29160, while the sum is 35.

The spelling of 20335129613 in words is "twenty billion, three hundred thirty-five million, one hundred twenty-nine thousand, six hundred thirteen".