67731030432 has 216 divisors, whose sum is σ = 213659255628. Its totient is φ = 20331417600.

The previous prime is 67731030431. The next prime is 67731030439. The reversal of 67731030432 is 23403013776.

67731030432 is a `hidden beast` number, since 6 + 7 + 7 + 310 + 304 + 32 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 813618576 + 66917411856 = 28524^2 + 258684^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (67731030431) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1978582 + ... + 2012522.

Almost surely, 2^67731030432 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 67731030432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106829627814).

67731030432 is an abundant number, since it is smaller than the sum of its proper divisors (145928225196).

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

67731030432 is a wasteful number, since it uses less digits than its factorization.

67731030432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34024 (or 34000 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The spelling of 67731030432 in words is "sixty-seven billion, seven hundred thirty-one million, thirty thousand, four hundred thirty-two".