20514345117 has 16 divisors (see below), whose sum is σ = 31400140800. Its totient is φ = 11669913072.

The previous prime is 20514345029. The next prime is 20514345149. The reversal of 20514345117 is 71154341502.

It is not a de Polignac number, because 20514345117 - 2²² = 20510150813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20514346117) 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 15 ways as a sum of consecutive naturals, for example, 2185617 + ... + 2194982.

It is an arithmetic number, because the mean of its divisors is an integer number (1962508800).

Almost surely, 2^20514345117 is an apocalyptic number.

It is an amenable number.

20514345117 is a deficient number, since it is larger than the sum of its proper divisors (10885795683).

20514345117 is a wasteful number, since it uses less digits than its factorization.

20514345117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380832.

The product of its (nonzero) digits is 16800, while the sum is 33.

Adding to 20514345117 its reverse (71154341502), we get a palindrome (91668686619).

The spelling of 20514345117 in words is "twenty billion, five hundred fourteen million, three hundred forty-five thousand, one hundred seventeen".