20481414840 has 128 divisors (see below), whose sum is σ = 68730120000. Its totient is φ = 5425012224.

The previous prime is 20481414827. The next prime is 20481414851. The reversal of 20481414840 is 4841418402.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20481414795 and 20481414804.

It is a congruent number.

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, 97282 + ... + 224558.

Almost surely, 2^20481414840 is an apocalyptic number.

20481414840 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 20481414840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34365060000).

20481414840 is an abundant number, since it is smaller than the sum of its proper divisors (48248705160).

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

20481414840 is a wasteful number, since it uses less digits than its factorization.

20481414840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127446 (or 127436 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The spelling of 20481414840 in words is "twenty billion, four hundred eighty-one million, four hundred fourteen thousand, eight hundred forty".