20512541283 has 32 divisors (see below), whose sum is σ = 30799319040. Its totient is φ = 12048812160.

The previous prime is 20512541281. The next prime is 20512541317. The reversal of 20512541283 is 38214521502.

It is a Cunningham number, because it is equal to 143222²-1.

It is not a de Polignac number, because 20512541283 - 2¹ = 20512541281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20512541281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 405793 + ... + 453533.

It is an arithmetic number, because the mean of its divisors is an integer number (962478720).

Almost surely, 2^20512541283 is an apocalyptic number.

20512541283 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20512541283 is a deficient number, since it is larger than the sum of its proper divisors (10286777757).

20512541283 is a wasteful number, since it uses less digits than its factorization.

20512541283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48259.

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 20512541283 in words is "twenty billion, five hundred twelve million, five hundred forty-one thousand, two hundred eighty-three".