427636840464 has 60 divisors (see below), whose sum is σ = 1197114422556. Its totient is φ = 142506878976.

The previous prime is 427636840429. The next prime is 427636840469. The reversal of 427636840464 is 464048636724.

427636840464 is a `hidden beast` number, since 4 + 2 + 76 + 36 + 84 + 0 + 464 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77774054400 + 349862786064 = 278880^2 + 591492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 427636840464.

It is not an unprimeable number, because it can be changed into a prime (427636840469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130732 + ... + 934004.

Almost surely, 2^427636840464 is an apocalyptic number.

It is an amenable number.

427636840464 is an abundant number, since it is smaller than the sum of its proper divisors (769477582092).

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

427636840464 is a wasteful number, since it uses less digits than its factorization.

427636840464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806984 (or 806975 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 54.

The spelling of 427636840464 in words is "four hundred twenty-seven billion, six hundred thirty-six million, eight hundred forty thousand, four hundred sixty-four".