20401333400100 has 72 divisors (see below), whose sum is σ = 62500084926048. Its totient is φ = 5120334656000.

The previous prime is 20401333400099. The next prime is 20401333400159. The reversal of 20401333400100 is 100433310402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2000125626 + ... + 2000135825.

It is an arithmetic number, because the mean of its divisors is an integer number (868056735084).

Almost surely, 2^{20401333400100} is an apocalyptic number.

20401333400100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20401333400100 is an abundant number, since it is smaller than the sum of its proper divisors (42098751525948).

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

20401333400100 is a wasteful number, since it uses less digits than its factorization.

20401333400100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000261485 (or 4000261478 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20401333400100 its reverse (100433310402), we get a palindrome (20501766710502).

The spelling of 20401333400100 in words is "twenty trillion, four hundred one billion, three hundred thirty-three million, four hundred thousand, one hundred".