20159469280 has 48 divisors (see below), whose sum is σ = 48434001840. Its totient is φ = 7927109632.

The previous prime is 20159469259. The next prime is 20159469287. The reversal of 20159469280 is 8296495102.

It is a self number, because there is not a number n which added to its sum of digits gives 20159469280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20159469287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058329 + ... + 1077208.

It is an arithmetic number, because the mean of its divisors is an integer number (1009041705).

Almost surely, 2^20159469280 is an apocalyptic number.

20159469280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20159469280 is an abundant number, since it is smaller than the sum of its proper divisors (28274532560).

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

20159469280 is a wasteful number, since it uses less digits than its factorization.

20159469280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135611 (or 2135603 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 20159469280 in words is "twenty billion, one hundred fifty-nine million, four hundred sixty-nine thousand, two hundred eighty".