67658980506 has 64 divisors (see below), whose sum is σ = 154605158400. Its totient is φ = 19567106496.

The previous prime is 67658980463. The next prime is 67658980507. The reversal of 67658980506 is 60508985676.

It is a super-2 number, since 2×67658980506² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67658980506.

It is not an unprimeable number, because it can be changed into a prime (67658980507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8475 + ... + 367953.

It is an arithmetic number, because the mean of its divisors is an integer number (2415705600).

Almost surely, 2^67658980506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67658980506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77302579200).

67658980506 is an abundant number, since it is smaller than the sum of its proper divisors (86946177894).

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

67658980506 is a wasteful number, since it uses less digits than its factorization.

67658980506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359643.

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 67658980506 in words is "sixty-seven billion, six hundred fifty-eight million, nine hundred eighty thousand, five hundred six".