201215401054400 has 84 divisors (see below), whose sum is σ = 497277724182720. Its totient is φ = 80134692326400.

The previous prime is 201215401054373. The next prime is 201215401054403. The reversal of 201215401054400 is 4450104512102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201215401054403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274217936 + ... + 274950735.

Almost surely, 2^{201215401054400} is an apocalyptic number.

201215401054400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201215401054400 is an abundant number, since it is smaller than the sum of its proper divisors (296062323128320).

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

201215401054400 is a wasteful number, since it uses less digits than its factorization.

201215401054400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549168922 (or 549168907 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 201215401054400 its reverse (4450104512102), we get a palindrome (205665505566502).

The spelling of 201215401054400 in words is "two hundred one trillion, two hundred fifteen billion, four hundred one million, fifty-four thousand, four hundred".