20288577450 has 48 divisors (see below), whose sum is σ = 50363401536. Its totient is φ = 5405155200.

The previous prime is 20288577443. The next prime is 20288577457. The reversal of 20288577450 is 5477588202.

It is an interprime number because it is at equal distance from previous prime (20288577443) and next prime (20288577457).

It is a self number, because there is not a number n which added to its sum of digits gives 20288577450.

It is not an unprimeable number, because it can be changed into a prime (20288577457) 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 23 ways as a sum of consecutive naturals, for example, 95830 + ... + 223070.

It is an arithmetic number, because the mean of its divisors is an integer number (1049237532).

Almost surely, 2^20288577450 is an apocalyptic number.

20288577450 is an abundant number, since it is smaller than the sum of its proper divisors (30074824086).

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

20288577450 is a wasteful number, since it uses less digits than its factorization.

20288577450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128319 (or 128314 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 48.

The spelling of 20288577450 in words is "twenty billion, two hundred eighty-eight million, five hundred seventy-seven thousand, four hundred fifty".