20356290448 has 40 divisors (see below), whose sum is σ = 43194110400. Its totient is φ = 9235964544.

The previous prime is 20356290443. The next prime is 20356290463. The reversal of 20356290448 is 84409265302.

It is not an unprimeable number, because it can be changed into a prime (20356290443) 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 7 ways as a sum of consecutive naturals, for example, 817108 + ... + 841651.

It is an arithmetic number, because the mean of its divisors is an integer number (1079852760).

Almost surely, 2^20356290448 is an apocalyptic number.

It is an amenable number.

20356290448 is an abundant number, since it is smaller than the sum of its proper divisors (22837819952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20356290448 is a wasteful number, since it uses less digits than its factorization.

20356290448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658839 (or 1658833 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 20356290448 in words is "twenty billion, three hundred fifty-six million, two hundred ninety thousand, four hundred forty-eight".