20478883488 has 96 divisors (see below), whose sum is σ = 62177020416. Its totient is φ = 5780598528.

The previous prime is 20478883471. The next prime is 20478883501. The reversal of 20478883488 is 88438887402.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×20478883488² (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 15 ways as a sum of consecutive naturals, for example, 127806 + ... + 239357.

It is an arithmetic number, because the mean of its divisors is an integer number (647677296).

Almost surely, 2^20478883488 is an apocalyptic number.

20478883488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20478883488 is an abundant number, since it is smaller than the sum of its proper divisors (41698136928).

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

20478883488 is a wasteful number, since it uses less digits than its factorization.

20478883488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367266 (or 367258 counting only the distinct ones).

The product of its (nonzero) digits is 22020096, while the sum is 60.

The spelling of 20478883488 in words is "twenty billion, four hundred seventy-eight million, eight hundred eighty-three thousand, four hundred eighty-eight".