63946664936 has 192 divisors, whose sum is σ = 158502096000. Its totient is φ = 23493265920.

The previous prime is 63946664909. The next prime is 63946664953.

It is a happy number.

63946664936 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59818610 + ... + 59819678.

It is an arithmetic number, because the mean of its divisors is an integer number (825531750).

Almost surely, 2^63946664936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63946664936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79251048000).

63946664936 is an abundant number, since it is smaller than the sum of its proper divisors (94555431064).

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

63946664936 is a wasteful number, since it uses less digits than its factorization.

63946664936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1377 counting only the distinct ones).

The product of its digits is 90699264, while the sum is 62.

The spelling of 63946664936 in words is "sixty-three billion, nine hundred forty-six million, six hundred sixty-four thousand, nine hundred thirty-six".