20439598080 has 352 divisors, whose sum is σ = 75083304960. Its totient is φ = 4693524480.

The previous prime is 20439598043. The next prime is 20439598129. The reversal of 20439598080 is 8089593402.

It is a tau number, because it is divible by the number of its divisors (352).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 3207057 + ... + 3213423.

Almost surely, 2^20439598080 is an apocalyptic number.

20439598080 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 20439598080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37541652480).

20439598080 is an abundant number, since it is smaller than the sum of its proper divisors (54643706880).

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

20439598080 is a wasteful number, since it uses less digits than its factorization.

20439598080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6425 (or 6407 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 20439598080 in words is "twenty billion, four hundred thirty-nine million, five hundred ninety-eight thousand, eighty".