20345020016635 has 16 divisors (see below), whose sum is σ = 25271294524416. Its totient is φ = 15711429783168.

The previous prime is 20345020016621. The next prime is 20345020016647. The reversal of 20345020016635 is 53661002054302.

It is a cyclic number.

It is not a de Polignac number, because 20345020016635 - 2⁵ = 20345020016603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20345020016594 and 20345020016603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432941392 + ... + 432988381.

It is an arithmetic number, because the mean of its divisors is an integer number (1579455907776).

Almost surely, 2^{20345020016635} is an apocalyptic number.

20345020016635 is a deficient number, since it is larger than the sum of its proper divisors (4926274507781).

20345020016635 is a wasteful number, since it uses less digits than its factorization.

20345020016635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865929942.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 20345020016635 in words is "twenty trillion, three hundred forty-five billion, twenty million, sixteen thousand, six hundred thirty-five".