20823371582 has 16 divisors (see below), whose sum is σ = 33663158592. Its totient is φ = 9603528480.

The previous prime is 20823371549. The next prime is 20823371603. The reversal of 20823371582 is 28517332802.

It is a super-2 number, since 2×20823371582² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267269 + ... + 336272.

It is an arithmetic number, because the mean of its divisors is an integer number (2103947412).

Almost surely, 2^20823371582 is an apocalyptic number.

20823371582 is a deficient number, since it is larger than the sum of its proper divisors (12839787010).

20823371582 is a wasteful number, since it uses less digits than its factorization.

20823371582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604883.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 20823371582 in words is "twenty billion, eight hundred twenty-three million, three hundred seventy-one thousand, five hundred eighty-two".