20154030105 has 64 divisors (see below), whose sum is σ = 35533209600. Its totient is φ = 9673470720.

The previous prime is 20154030101. The next prime is 20154030161. The reversal of 20154030105 is 50103045102.

It is not a de Polignac number, because 20154030105 - 2² = 20154030101 is a prime.

It is a super-2 number, since 2×20154030105² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20154030101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7410936 + ... + 7413654.

It is an arithmetic number, because the mean of its divisors is an integer number (555206400).

Almost surely, 2^20154030105 is an apocalyptic number.

It is an amenable number.

20154030105 is a deficient number, since it is larger than the sum of its proper divisors (15379179495).

20154030105 is a wasteful number, since it uses less digits than its factorization.

20154030105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 20154030105 its reverse (50103045102), we get a palindrome (70257075207).

The spelling of 20154030105 in words is "twenty billion, one hundred fifty-four million, thirty thousand, one hundred five".