67750731776 has 168 divisors, whose sum is σ = 167701106304. Its totient is φ = 26798653440.

The previous prime is 67750731751. The next prime is 67750731821. The reversal of 67750731776 is 67713705776.

It is a super-2 number, since 2×67750731776² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9687641 + ... + 9694631.

Almost surely, 2^67750731776 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 67750731776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83850553152).

67750731776 is an abundant number, since it is smaller than the sum of its proper divisors (99950374528).

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

67750731776 is an equidigital number, since it uses as much as digits as its factorization.

67750731776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7050 (or 7013 counting only the distinct ones).

The product of its (nonzero) digits is 9075780, while the sum is 56.

The spelling of 67750731776 in words is "sixty-seven billion, seven hundred fifty million, seven hundred thirty-one thousand, seven hundred seventy-six".