63734786976 has 192 divisors, whose sum is σ = 194358528000. Its totient is φ = 17910789120.

The previous prime is 63734786971. The next prime is 63734787013. The reversal of 63734786976 is 67968743736.

It is a super-4 number, since 4×63734786976⁴ (a number of 44 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (63734786971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23806950 + ... + 23809626.

It is an arithmetic number, because the mean of its divisors is an integer number (1012284000).

Almost surely, 2^63734786976 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 63734786976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97179264000).

63734786976 is an abundant number, since it is smaller than the sum of its proper divisors (130623741024).

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

63734786976 is a wasteful number, since it uses less digits than its factorization.

63734786976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267 (or 3259 counting only the distinct ones).

The product of its digits is 192036096, while the sum is 66.

The spelling of 63734786976 in words is "sixty-three billion, seven hundred thirty-four million, seven hundred eighty-six thousand, nine hundred seventy-six".