20501240047600 has 240 divisors, whose sum is σ = 53676178497760. Its totient is φ = 7479865036800.

The previous prime is 20501240047591. The next prime is 20501240047637. The reversal of 20501240047600 is 674004210502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147699031 + ... + 147837769.

Almost surely, 2^{20501240047600} is an apocalyptic number.

20501240047600 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 20501240047600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26838089248880).

20501240047600 is an abundant number, since it is smaller than the sum of its proper divisors (33174938450160).

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

20501240047600 is a wasteful number, since it uses less digits than its factorization.

20501240047600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139108 (or 139097 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The spelling of 20501240047600 in words is "twenty trillion, five hundred one billion, two hundred forty million, forty-seven thousand, six hundred".