20013653123659 has 8 divisors (see below), whose sum is σ = 21754596351600. Its totient is φ = 18301485817056.

The previous prime is 20013653123641. The next prime is 20013653123687. The reversal of 20013653123659 is 95632135631002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20013653123659 - 2⁹ = 20013653123147 is a prime.

It is a super-2 number, since 2×20013653123659² (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 (20013653123459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7193978884 + ... + 7193981665.

It is an arithmetic number, because the mean of its divisors is an integer number (2719324543950).

Almost surely, 2^{20013653123659} is an apocalyptic number.

20013653123659 is a deficient number, since it is larger than the sum of its proper divisors (1740943227941).

20013653123659 is a wasteful number, since it uses less digits than its factorization.

20013653123659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14387960669.

The product of its (nonzero) digits is 874800, while the sum is 46.

The spelling of 20013653123659 in words is "twenty trillion, thirteen billion, six hundred fifty-three million, one hundred twenty-three thousand, six hundred fifty-nine".