201278366424 has 80 divisors (see below), whose sum is σ = 573321256200. Its totient is φ = 65955610368.

The previous prime is 201278366423. The next prime is 201278366459. The reversal of 201278366424 is 424663872102.

It is a happy number.

201278366424 is a `hidden beast` number, since 20 + 127 + 83 + 6 + 6 + 424 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 201278366424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201278366423) 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 19 ways as a sum of consecutive naturals, for example, 2594097 + ... + 2670560.

Almost surely, 2^201278366424 is an apocalyptic number.

201278366424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201278366424 is an abundant number, since it is smaller than the sum of its proper divisors (372042889776).

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

201278366424 is a wasteful number, since it uses less digits than its factorization.

201278366424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5264734 (or 5264721 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 201278366424 in words is "two hundred one billion, two hundred seventy-eight million, three hundred sixty-six thousand, four hundred twenty-four".