20520982283 has 24 divisors (see below), whose sum is σ = 22026980976. Its totient is φ = 19104940800.

The previous prime is 20520982259. The next prime is 20520982351. The reversal of 20520982283 is 38228902502.

It is not a de Polignac number, because 20520982283 - 2⁶ = 20520982219 is a prime.

It is a super-2 number, since 2×20520982283² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20520982283.

It is not an unprimeable number, because it can be changed into a prime (20520982213) 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 23 ways as a sum of consecutive naturals, for example, 12383591 + ... + 12385247.

It is an arithmetic number, because the mean of its divisors is an integer number (917790874).

Almost surely, 2^20520982283 is an apocalyptic number.

20520982283 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20520982283 is a deficient number, since it is larger than the sum of its proper divisors (1505998693).

20520982283 is a wasteful number, since it uses less digits than its factorization.

20520982283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 20520982283 in words is "twenty billion, five hundred twenty million, nine hundred eighty-two thousand, two hundred eighty-three".