63390923391 has 8 divisors (see below), whose sum is σ = 88969717120. Its totient is φ = 40036372632.

The previous prime is 63390923347. The next prime is 63390923413. The reversal of 63390923391 is 19332909336.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63390923391 - 2¹¹ = 63390921343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63390923391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63390903391) 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, 556060675 + ... + 556060788.

It is an arithmetic number, because the mean of its divisors is an integer number (11121214640).

Almost surely, 2^63390923391 is an apocalyptic number.

63390923391 is a deficient number, since it is larger than the sum of its proper divisors (25578793729).

63390923391 is a wasteful number, since it uses less digits than its factorization.

63390923391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112121485.

The product of its (nonzero) digits is 708588, while the sum is 48.

The spelling of 63390923391 in words is "sixty-three billion, three hundred ninety million, nine hundred twenty-three thousand, three hundred ninety-one".