20545514834 has 16 divisors (see below), whose sum is σ = 34935694080. Its totient is φ = 8983463760.

The previous prime is 20545514831. The next prime is 20545514837. The reversal of 20545514834 is 43841554502.

It is an interprime number because it is at equal distance from previous prime (20545514831) and next prime (20545514837).

It is a super-2 number, since 2×20545514834² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20545514791 and 20545514800.

It is not an unprimeable number, because it can be changed into a prime (20545514831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20794562 + ... + 20795549.

It is an arithmetic number, because the mean of its divisors is an integer number (2183480880).

Almost surely, 2^20545514834 is an apocalyptic number.

20545514834 is a deficient number, since it is larger than the sum of its proper divisors (14390179246).

20545514834 is a wasteful number, since it uses less digits than its factorization.

20545514834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41590145.

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 20545514834 in words is "twenty billion, five hundred forty-five million, five hundred fourteen thousand, eight hundred thirty-four".