20321886480 has 160 divisors (see below), whose sum is σ = 73178197248. Its totient is φ = 4568832000.

The previous prime is 20321886457. The next prime is 20321886499. The reversal of 20321886480 is 8468812302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3330 + ... + 201630.

Almost surely, 2^20321886480 is an apocalyptic number.

20321886480 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 20321886480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36589098624).

20321886480 is an abundant number, since it is smaller than the sum of its proper divisors (52856310768).

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

20321886480 is a wasteful number, since it uses less digits than its factorization.

20321886480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198385 (or 198379 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 20321886480 in words is "twenty billion, three hundred twenty-one million, eight hundred eighty-six thousand, four hundred eighty".