63211777820 has 12 divisors (see below), whose sum is σ = 132744733464. Its totient is φ = 25284711120.

The previous prime is 63211777819. The next prime is 63211777829. The reversal of 63211777820 is 2877711236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63211777829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580294426 + ... + 1580294465.

It is an arithmetic number, because the mean of its divisors is an integer number (11062061122).

Almost surely, 2^63211777820 is an apocalyptic number.

It is an amenable number.

63211777820 is an abundant number, since it is smaller than the sum of its proper divisors (69532955644).

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

63211777820 is a wasteful number, since it uses less digits than its factorization.

63211777820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160588900 (or 3160588898 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 63211777820 in words is "sixty-three billion, two hundred eleven million, seven hundred seventy-seven thousand, eight hundred twenty".