63274280646 has 16 divisors (see below), whose sum is σ = 126565129008. Its totient is φ = 21088665600.

The previous prime is 63274280633. The next prime is 63274280689. The reversal of 63274280646 is 64608247236.

It is a junction number, because it is equal to n+sod(n) for n = 63274280595 and 63274280604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640395 + ... + 732566.

It is an arithmetic number, because the mean of its divisors is an integer number (7910320563).

Almost surely, 2^63274280646 is an apocalyptic number.

63274280646 is an abundant number, since it is smaller than the sum of its proper divisors (63290848362).

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

63274280646 is a wasteful number, since it uses less digits than its factorization.

63274280646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380647.

The product of its (nonzero) digits is 2322432, while the sum is 48.

The spelling of 63274280646 in words is "sixty-three billion, two hundred seventy-four million, two hundred eighty thousand, six hundred forty-six".