201205621456 has 40 divisors (see below), whose sum is σ = 445547802560. Its totient is φ = 86226902784.

The previous prime is 201205621451. The next prime is 201205621501. The reversal of 201205621456 is 654126502102.

201205621456 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201205621451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4420060 + ... + 4465348.

It is an arithmetic number, because the mean of its divisors is an integer number (11138695064).

Almost surely, 2^201205621456 is an apocalyptic number.

It is an amenable number.

201205621456 is an abundant number, since it is smaller than the sum of its proper divisors (244342181104).

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

201205621456 is a wasteful number, since it uses less digits than its factorization.

201205621456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84971 (or 84965 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 201205621456 in words is "two hundred one billion, two hundred five million, six hundred twenty-one thousand, four hundred fifty-six".