20405030107 has 32 divisors (see below), whose sum is σ = 26800427520. Its totient is φ = 15051121920.

The previous prime is 20405030059. The next prime is 20405030111. The reversal of 20405030107 is 70103050402.

It is a cyclic number.

It is not a de Polignac number, because 20405030107 - 2¹⁵ = 20404997339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20405033107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2091613 + ... + 2101345.

It is an arithmetic number, because the mean of its divisors is an integer number (837513360).

Almost surely, 2^20405030107 is an apocalyptic number.

20405030107 is a deficient number, since it is larger than the sum of its proper divisors (6395397413).

20405030107 is a wasteful number, since it uses less digits than its factorization.

20405030107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11203.

The product of its (nonzero) digits is 840, while the sum is 22.

Adding to 20405030107 its reverse (70103050402), we get a palindrome (90508080509).

The spelling of 20405030107 in words is "twenty billion, four hundred five million, thirty thousand, one hundred seven".