20053405140 has 192 divisors, whose sum is σ = 59868135936. Its totient is φ = 5004730368.

The previous prime is 20053405133. The next prime is 20053405193. The reversal of 20053405140 is 4150435002.

It is a self number, because there is not a number n which added to its sum of digits gives 20053405140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13800654 + ... + 13802106.

It is an arithmetic number, because the mean of its divisors is an integer number (311813208).

Almost surely, 2^20053405140 is an apocalyptic number.

20053405140 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 20053405140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29934067968).

20053405140 is an abundant number, since it is smaller than the sum of its proper divisors (39814730796).

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

20053405140 is a wasteful number, since it uses less digits than its factorization.

20053405140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The spelling of 20053405140 in words is "twenty billion, fifty-three million, four hundred five thousand, one hundred forty".