63790648421 has 8 divisors (see below), whose sum is σ = 63877275864. Its totient is φ = 63704066560.

The previous prime is 63790648387. The next prime is 63790648489. The reversal of 63790648421 is 12484609736.

It can be written as a sum of positive squares in 4 ways, for example, as 42236004196 + 21554644225 = 205514^2 + 146815^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63790648421 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 63790648421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63790648121) 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, 3489521 + ... + 3507753.

It is an arithmetic number, because the mean of its divisors is an integer number (7984659483).

Almost surely, 2^63790648421 is an apocalyptic number.

It is an amenable number.

63790648421 is a deficient number, since it is larger than the sum of its proper divisors (86627443).

63790648421 is a wasteful number, since it uses less digits than its factorization.

63790648421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22791.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 63790648421 in words is "sixty-three billion, seven hundred ninety million, six hundred forty-eight thousand, four hundred twenty-one".