20256084480 has 160 divisors (see below), whose sum is σ = 66845864448. Its totient is φ = 5227315200.

The previous prime is 20256084439. The next prime is 20256084523. The reversal of 20256084480 is 8448065202.

It is a tau number, because it is divible by the number of its divisors (160).

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, 195540 + ... + 280620.

Almost surely, 2^20256084480 is an apocalyptic number.

20256084480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20256084480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33422932224).

20256084480 is an abundant number, since it is smaller than the sum of its proper divisors (46589779968).

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

20256084480 is an equidigital number, since it uses as much as digits as its factorization.

20256084480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85138 (or 85122 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The spelling of 20256084480 in words is "twenty billion, two hundred fifty-six million, eighty-four thousand, four hundred eighty".