421078633593 has 64 divisors (see below), whose sum is σ = 599740416000. Its totient is φ = 262046727936.

The previous prime is 421078633589. The next prime is 421078633601. The reversal of 421078633593 is 395336870124.

It is not a de Polignac number, because 421078633593 - 2² = 421078633589 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421078633513) 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 63 ways as a sum of consecutive naturals, for example, 879078328 + ... + 879078806.

It is an arithmetic number, because the mean of its divisors is an integer number (9370944000).

It is a 1-persistent number, because it is pandigital, but 2⋅421078633593 = 842157267186 is not.

Almost surely, 2^421078633593 is an apocalyptic number.

It is an amenable number.

421078633593 is a deficient number, since it is larger than the sum of its proper divisors (178661782407).

421078633593 is a wasteful number, since it uses less digits than its factorization.

421078633593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286.

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 421078633593 in words is "four hundred twenty-one billion, seventy-eight million, six hundred thirty-three thousand, five hundred ninety-three".