20463808574 has 16 divisors (see below), whose sum is σ = 33498305136. Its totient is φ = 9298377600.

The previous prime is 20463808571. The next prime is 20463808579. The reversal of 20463808574 is 47580836402.

It is a super-2 number, since 2×20463808574² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20463808571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104747 + ... + 227814.

It is an arithmetic number, because the mean of its divisors is an integer number (2093644071).

Almost surely, 2^20463808574 is an apocalyptic number.

20463808574 is a deficient number, since it is larger than the sum of its proper divisors (13034496562).

20463808574 is a wasteful number, since it uses less digits than its factorization.

20463808574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335371.

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 20463808574 in words is "twenty billion, four hundred sixty-three million, eight hundred eight thousand, five hundred seventy-four".