20061620103 has 16 divisors (see below), whose sum is σ = 30623087360. Its totient is φ = 11443908096.

The previous prime is 20061620101. The next prime is 20061620141. The reversal of 20061620103 is 30102616002.

It is a happy number.

It is not a de Polignac number, because 20061620103 - 2¹ = 20061620101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20061620103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20061620101) 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, 815713 + ... + 839946.

It is an arithmetic number, because the mean of its divisors is an integer number (1913942960).

Almost surely, 2^20061620103 is an apocalyptic number.

20061620103 is a deficient number, since it is larger than the sum of its proper divisors (10561467257).

20061620103 is a wasteful number, since it uses less digits than its factorization.

20061620103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656246.

The product of its (nonzero) digits is 432, while the sum is 21.

The spelling of 20061620103 in words is "twenty billion, sixty-one million, six hundred twenty thousand, one hundred three".