67631463936 has 240 divisors, whose sum is σ = 215662116384. Its totient is φ = 20294664192.

The previous prime is 67631463931. The next prime is 67631463943. The reversal of 67631463936 is 63936413676.

67631463936 is a `hidden beast` number, since 67 + 6 + 31 + 463 + 93 + 6 = 666.

It is a super-2 number, since 2×67631463936² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67631463931) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1782960 + ... + 1820496.

Almost surely, 2^67631463936 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 67631463936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107831058192).

67631463936 is an abundant number, since it is smaller than the sum of its proper divisors (148030652448).

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

67631463936 is a wasteful number, since it uses less digits than its factorization.

67631463936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37601 (or 37582 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 54.

The spelling of 67631463936 in words is "sixty-seven billion, six hundred thirty-one million, four hundred sixty-three thousand, nine hundred thirty-six".