201144201023400 has 96 divisors (see below), whose sum is σ = 623588584904160. Its totient is φ = 53634878403840.

The previous prime is 201144201023281. The next prime is 201144201023407. The reversal of 201144201023400 is 4320102441102.

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

It is not an unprimeable number, because it can be changed into a prime (201144201023407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2157202 + ... + 20172801.

It is an arithmetic number, because the mean of its divisors is an integer number (6495714426085).

Almost surely, 2^{201144201023400} is an apocalyptic number.

201144201023400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201144201023400 is an abundant number, since it is smaller than the sum of its proper divisors (422444383880760).

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

201144201023400 is a wasteful number, since it uses less digits than its factorization.

201144201023400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22345035 (or 22345026 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 201144201023400 its reverse (4320102441102), we get a palindrome (205464303464502).

The spelling of 201144201023400 in words is "two hundred one trillion, one hundred forty-four billion, two hundred one million, twenty-three thousand, four hundred".