20503051301400 has 192 divisors, whose sum is σ = 63651651033600. Its totient is φ = 5459554114560.

The previous prime is 20503051301347. The next prime is 20503051301443. The reversal of 20503051301400 is 410315030502.

It is a super-2 number, since 2×20503051301400² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 3128800524 + ... + 3128807076.

It is an arithmetic number, because the mean of its divisors is an integer number (331519015800).

Almost surely, 2^{20503051301400} is an apocalyptic number.

20503051301400 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 20503051301400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31825825516800).

20503051301400 is an abundant number, since it is smaller than the sum of its proper divisors (43148599732200).

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

20503051301400 is a wasteful number, since it uses less digits than its factorization.

20503051301400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13338 (or 13329 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20503051301400 its reverse (410315030502), we get a palindrome (20913366331902).

The spelling of 20503051301400 in words is "twenty trillion, five hundred three billion, fifty-one million, three hundred one thousand, four hundred".