63953779146 has 8 divisors (see below), whose sum is σ = 127907558304. Its totient is φ = 21317926380.

The previous prime is 63953779121. The next prime is 63953779157. The reversal of 63953779146 is 64197735936.

It is a happy number.

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

63953779146 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 63953779146.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5329481590 + ... + 5329481601.

It is an arithmetic number, because the mean of its divisors is an integer number (15988444788).

Almost surely, 2^63953779146 is an apocalyptic number.

63953779146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

63953779146 is a wasteful number, since it uses less digits than its factorization.

63953779146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10658963196.

The product of its digits is 25719120, while the sum is 60.

The spelling of 63953779146 in words is "sixty-three billion, nine hundred fifty-three million, seven hundred seventy-nine thousand, one hundred forty-six".