20051154513 has 12 divisors (see below), whose sum is σ = 31190684980. Its totient is φ = 12339171936.

The previous prime is 20051154503. The next prime is 20051154569. The reversal of 20051154513 is 31545115002.

20051154513 is a `hidden beast` number, since 200 + 5 + 1 + 1 + 5 + 451 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11035082304 + 9016072209 = 105048^2 + 94953^2 .

It is not a de Polignac number, because 20051154513 - 2⁶ = 20051154449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20051154503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85688578 + ... + 85688811.

Almost surely, 2^20051154513 is an apocalyptic number.

It is an amenable number.

20051154513 is a deficient number, since it is larger than the sum of its proper divisors (11139530467).

20051154513 is a wasteful number, since it uses less digits than its factorization.

20051154513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171377408 (or 171377405 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 20051154513 its reverse (31545115002), we get a palindrome (51596269515).

The spelling of 20051154513 in words is "twenty billion, fifty-one million, one hundred fifty-four thousand, five hundred thirteen".