20822618474 has 16 divisors (see below), whose sum is σ = 37247914368. Its totient is φ = 8535980112.

The previous prime is 20822618459. The next prime is 20822618513. The reversal of 20822618474 is 47481622802.

It is a super-2 number, since 2×20822618474² (a number of 21 digits) contains 22 as substring.

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, 32332937 + ... + 32333580.

It is an arithmetic number, because the mean of its divisors is an integer number (2327994648).

Almost surely, 2^20822618474 is an apocalyptic number.

20822618474 is a deficient number, since it is larger than the sum of its proper divisors (16425295894).

20822618474 is a wasteful number, since it uses less digits than its factorization.

20822618474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64666549.

The product of its (nonzero) digits is 344064, while the sum is 44.

The spelling of 20822618474 in words is "twenty billion, eight hundred twenty-two million, six hundred eighteen thousand, four hundred seventy-four".