20706430113 has 16 divisors (see below), whose sum is σ = 30706515840. Its totient is φ = 13790641392.

The previous prime is 20706430111. The next prime is 20706430123. The reversal of 20706430113 is 31103460702.

20706430113 is a `hidden beast` number, since 2 + 0 + 7 + 0 + 643 + 0 + 1 + 13 = 666.

It is not a de Polignac number, because 20706430113 - 2¹ = 20706430111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20706430111) 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, 351181 + ... + 405882.

It is an arithmetic number, because the mean of its divisors is an integer number (1919157240).

Almost surely, 2^20706430113 is an apocalyptic number.

It is an amenable number.

20706430113 is a deficient number, since it is larger than the sum of its proper divisors (10000085727).

20706430113 is a wasteful number, since it uses less digits than its factorization.

20706430113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758085 (or 758079 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

Adding to 20706430113 its reverse (31103460702), we get a palindrome (51809890815).

The spelling of 20706430113 in words is "twenty billion, seven hundred six million, four hundred thirty thousand, one hundred thirteen".