20354997484 has 24 divisors (see below), whose sum is σ = 36134987840. Its totient is φ = 10031164416.

The previous prime is 20354997461. The next prime is 20354997497. The reversal of 20354997484 is 48479945302.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 126514 + ... + 238150.

Almost surely, 2^20354997484 is an apocalyptic number.

It is an amenable number.

20354997484 is a deficient number, since it is larger than the sum of its proper divisors (15779990356).

20354997484 is a wasteful number, since it uses less digits than its factorization.

20354997484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112297 (or 112295 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 20354997484 in words is "twenty billion, three hundred fifty-four million, nine hundred ninety-seven thousand, four hundred eighty-four".