201451222544 has 40 divisors (see below), whose sum is σ = 458548067712. Its totient is φ = 84524987520.

The previous prime is 201451222543. The next prime is 201451222547. The reversal of 201451222544 is 445222154102.

201451222544 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 201451222544.

It is not an unprimeable number, because it can be changed into a prime (201451222543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44021144 + ... + 44025719.

Almost surely, 2^201451222544 is an apocalyptic number.

It is an amenable number.

201451222544 is an abundant number, since it is smaller than the sum of its proper divisors (257096845168).

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

201451222544 is a wasteful number, since it uses less digits than its factorization.

201451222544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88046895 (or 88046889 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 201451222544 its reverse (445222154102), we get a palindrome (646673376646).

The spelling of 201451222544 in words is "two hundred one billion, four hundred fifty-one million, two hundred twenty-two thousand, five hundred forty-four".